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<!doctype html><html lang="zh-CN"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>200关评分修订版 · 设计评审</title><style>body{max-width:920px;margin:24px auto;padding:0 18px;background:#f7f5fb;color:#303047;font:15px/1.7 system-ui,'Microsoft YaHei'}article{background:white;border:1px solid #ddd5ed;border-radius:16px;padding:20px;margin:20px 0;break-inside:avoid}.boards{display:flex;gap:24px;flex-wrap:wrap}figure{margin:0;width:380px;max-width:100%}svg{max-height:450px;width:100%}details{cursor:pointer}a{color:#6552aa}@media print{body{background:white}article{border:none;page-break-after:always}} </style><a href="index.html">进入试玩</a><h1>200关评分修订版 · 200关设计评审</h1><p>每格一次;数字为访问步号,各关显示当前启用规则。</p><p>原始盘面和作者解分开展示。标题是设计任务,真人推理路径与难度仍需试玩验证。数字、窗口、方向、类别和开关显示在格内;步差与先后关系见逐关推理依据。</p><article><h2>1 · 第1章 · 理解与应用 · 引导 · 第一笔</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 153.33333333333331" role="img" aria-label="引导 · 第一笔"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 133.33333333333331,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 360,20 360,133.33333333333331 246.66666666666666,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="76.66666666666666" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="76.66666666666666" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t0</text><text x="190" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="190" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t1</text><text x="303.3333333333333" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="303.3333333333333" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t2</text></svg><figcaption>原始盘面 · 格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 153.33333333333331" role="img" aria-label="引导 · 第一笔"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 133.33333333333331,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 360,20 360,133.33333333333331 246.66666666666666,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="76.66666666666666,76.66666666666666 190,76.66666666666666 303.3333333333333,76.66666666666666" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="76.66666666666666" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="76.66666666666666" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t0</text><text x="190" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="190" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t1</text><text x="303.3333333333333" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="303.3333333333333" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t2</text></svg></figure><p>t0 → t1 → t2</p></details></div><h3>推理依据</h3><ul></ul><p>关键分叉:第 0 步应走 t0,诱惑路线走 数字不符的候选路线。排除依据:基础数字约束。</p><details><summary>逐项机制必要性反例</summary></details></article><article><h2>2 · 第1章 · 理解与应用 · 枢纽留后</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="枢纽留后"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#f1eef9" 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font-weight="700">3</text><text x="303.3333333333333" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="76.66666666666666" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="76.66666666666666" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="190" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="190" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text></svg></figure><p>c1 → c2 → c5 → c4 → c7 → c6 → c3 → c0</p></details></div><h3>推理依据</h3><ul></ul><p>关键分叉:第 0 步应走 c1,诱惑路线走 数字不符的候选路线。排除依据:基础数字约束。</p><details><summary>逐项机制必要性反例</summary></details></article><article><h2>4 · 第1章 · 理解与应用 · 大块一步</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="大块一步"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 225,20 225,122.5 122.5,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,20 327.5,20 327.5,122.5 225,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,122.5 122.5,122.5 122.5,225 20,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,122.5 327.5,122.5 327.5,327.5 122.5,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,225 122.5,225 122.5,327.5 20,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,327.5 122.5,327.5 122.5,430 20,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,327.5 225,327.5 225,430 122.5,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="71.25" y="63.25" text-anchor="middle" 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font-size="21" font-weight="700"></text><text x="225" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="71.25" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="71.25" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="71.25" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="71.25" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="173.75" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="173.75" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text></svg><figcaption>原始盘面 · 格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="大块一步"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 225,20 225,122.5 122.5,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,20 327.5,20 327.5,122.5 225,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,122.5 122.5,122.5 122.5,225 20,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,122.5 327.5,122.5 327.5,327.5 122.5,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,225 122.5,225 122.5,327.5 20,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,327.5 122.5,327.5 122.5,430 20,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,327.5 225,327.5 225,430 122.5,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="71.25,173.75 71.25,71.25 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y="183.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="225" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="225" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="71.25" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="71.25" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="71.25" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="71.25" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="173.75" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="173.75" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text></svg></figure><p>c3 → c0 → c1 → c2 → c4 → c7 → c6 → c5</p></details></div><h3>推理依据</h3><ul></ul><p>关键分叉:第 0 步应走 c3,诱惑路线走 数字不符的候选路线。排除依据:基础数字约束。</p><details><summary>逐项机制必要性反例</summary></details></article><article><h2>5 · 第1章 · 理解与应用 · 引导 · 墙不能穿过</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="引导 · 墙不能穿过"><polygon points="20,20 190,20 190,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 360,20 360,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 190,190 190,360 20,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 360,190 360,360 190,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><line x1="190" y1="40.400000000000006" x2="190" y2="169.6" stroke="#272638" stroke-width="8" transform="rotate(0 190 105)"/><line x1="190" y1="40.400000000000006" 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y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="76.66666666666666" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="190" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="190" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="303.3333333333333" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="303.3333333333333" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text></svg></figure><p>c6 → c7 → c8 → c5 → c4 → c3 → c0 → c1 → c2</p></details></div><h3>推理依据</h3><ul><li>墙 c3—c6 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c7,诱惑路线走 c3。排除依据:永久墙不能穿过。</p><details><summary>逐项机制必要性反例</summary><p>解除 wall:0 后:c6 → c3 → c4 → c7 → c8 → c5 → c2 → c1 → c0</p></details></article><article><h2>7 · 第1章 · 理解与应用 · 近路要绕</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="近路要绕"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 225,20 225,122.5 122.5,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,20 327.5,20 327.5,122.5 225,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,122.5 122.5,122.5 122.5,225 20,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,122.5 225,122.5 225,225 122.5,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,122.5 327.5,122.5 327.5,225 225,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,225 122.5,225 122.5,327.5 20,327.5" 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y="98.33333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t3</text><text x="225" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t4</text><text x="225" y="353.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="371.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t5</text></svg><figcaption>原始盘面 · 格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 313.3333333333333 450" role="img" aria-label="引导 · 上下直行"><polygon points="20,20 156.66666666666666,20 156.66666666666666,156.66666666666666 20,156.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,156.66666666666666 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t5</p></details></article><article><h2>12 · 第2章 · 理解与应用 · 通道的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道的选择"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 133.33333333333331,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 360,20 360,133.33333333333331 246.66666666666666,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,133.33333333333331 133.33333333333331,133.33333333333331 133.33333333333331,246.66666666666666 20,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,133.33333333333331 246.66666666666666,133.33333333333331 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">─</text><text x="190" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="303.3333333333333" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="303.3333333333333" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="76.66666666666666" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="76.66666666666666" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="190" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="190" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="303.3333333333333" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="303.3333333333333" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="76.66666666666666" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="76.66666666666666" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="190" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="190" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text></svg><figcaption>原始盘面 · 格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道的选择"><polygon 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必须左右直行</li></ul><p>关键分叉:第 4 步应走 c0,诱惑路线走 c4。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c1 后:c5 → c2 → c1 → c4 → c7 → c6 → c3 → c0</p></details></article><article><h2>13 · 第2章 · 理解与应用 · 引导 · 按拐角进出</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 266.66666666666663" role="img" aria-label="引导 · 按拐角进出"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 133.33333333333331,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 360,20 360,133.33333333333331 246.66666666666666,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,133.33333333333331 133.33333333333331,133.33333333333331 133.33333333333331,246.66666666666666 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必须左右直行</li><li>c9 必须左与上拐角</li><li>墙 c10—c11 封闭该邻接</li></ul><p>关键分叉:第 3 步应走 c6,诱惑路线走 c3。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c2 后:c11 → c7 → c3 → c2 → c6 → c10 → c14 → c13 → c12 → c8 → c9 → c5 → c1 → c0 → c4</p><p>解除 direction:c9 后:c11 → c7 → c6 → c5 → c9 → c10 → c14 → c13 → c12 → c8 → c4 → c0 → c1 → c2 → c3</p><p>解除 wall:0 后:c11 → c10 → c14 → c13 → c12 → c8 → c9 → c5 → c6 → c7 → c3 → c2 → c1 → c0 → c4</p></details></article><article><h2>15 · 第2章 · 理解与应用 · 认清拐角</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="认清拐角"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 225,20 225,122.5 122.5,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,20 327.5,20 327.5,122.5 225,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,122.5 122.5,122.5 122.5,225 20,225" 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c3 → c6 → c9 → c10 → c7 → c8 → c5 → c2</p></details></article><article><h2>16 · 第2章 · 理解与应用 · 通道 · 墙的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 墙的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 360,105 360,190 275,190" fill="#f1eef9" 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font-size="10" fill="#665c78">c8</text><text x="147.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="147.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text><text x="232.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">└</text><text x="232.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10</text><text x="317.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="62.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="62.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text 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c6 → c7 → c11 → c10</p><p>解除 wall:0 后:c3 → c7 → c11 → c10 → c6 → c2 → c1 → c0 → c4 → c5 → c9 → c8 → c12 → c13</p></details></article><article><h2>17 · 第2章 · 理解与应用 · 引导 · 蓝橙交替</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="引导 · 蓝橙交替"><polygon points="20,190 190,190 190,360 20,360" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,20 360,20 360,190 20,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 360,190 360,360 190,360" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><text x="105" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="105" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t0</text><text x="190" y="97" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="190" y="115" text-anchor="middle" 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direction:c3 后:c12 → c8 → c9 → c5 → c4 → c0 → c1 → c2 → c6 → c10 → c11 → c7 → c3</p><p>解除 wall:0 后:c12 → c8 → c9 → c10 → c6 → c5 → c4 → c0 → c1 → c2 → c3 → c7 → c11</p></details></article><article><h2>19 · 第2章 · 理解与应用 · 双色 · 墙的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="双色 · 墙的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" 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c3</p></details></article><article><h2>20 · 第2章 · 理解与应用 · 通道 · 双色的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 360,105 360,190 275,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon 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格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 360,105 360,190 275,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 105,190 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封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c2,诱惑路线走 c7。排除依据:永久墙不能穿过。</p><details><summary>逐项机制必要性反例</summary><p>解除 wall:0 后:c8 → c7 → c2 → c1 → c0 → c3 → c4 → c6 → c5 → c9 → c10 → c11</p></details></article><article><h2>22 · 第3章 · 理解与应用 · 通道 · 双色的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,275 20,275" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 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c6 → c2 → c3 → c7 → c10 → c14 → c13 → c9 → c8 → c12</p></details></div><h3>推理依据</h3><ul><li>c13 必须上与右拐角</li><li>每步蓝橙交替</li></ul><p>关键分叉:第 13 步应走 c9,诱惑路线走 c12。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c13 后:c11 → c4 → c0 → c1 → c5 → c6 → c2 → c3 → c7 → c10 → c14 → c13 → c12 → c8 → c9</p><p>解除 alternation 后:c11 → c12 → c8 → c4 → c0 → c1 → c2 → c3 → c7 → c10 → c14 → c13 → c9 → c6 → c5</p></details></article><article><h2>23 · 第3章 · 理解与应用 · 引导 · 奇偶步号</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="引导 · 奇偶步号"><polygon points="20,190 190,190 190,360 20,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,20 360,20 360,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 360,190 360,360 190,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="105" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="105" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t0</text><text x="190" y="97" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">偶</text><text x="190" y="115" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t1</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t2</text></svg><figcaption>原始盘面 · 格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="引导 · 奇偶步号"><polygon points="20,190 190,190 190,360 20,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,20 360,20 360,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 360,190 360,360 190,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="105,275 190,105 275,275" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="105" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="105" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t0</text><text x="190" y="97" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="190" y="115" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t1 · 偶</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t2</text></svg></figure><p>t0 → t1 → t2</p></details></div><h3>推理依据</h3><ul><li>t1 为第2步,要求偶</li></ul><p>关键分叉:第 2 步应走 t1,诱惑路线走 t2。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:t1 后:t0 → t2 → t1</p></details></article><article><h2>24 · 第3章 · 理解与应用 · 奇偶 · 通道的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="奇偶 · 通道的选择"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 327.5,20 327.5,122.5 225,122.5 225,225 122.5,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,122.5 122.5,122.5 122.5,225 20,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,122.5 327.5,122.5 327.5,225 225,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,225 122.5,225 122.5,327.5 20,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,225 225,225 225,327.5 122.5,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,225 327.5,225 327.5,327.5 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font-size="21" font-weight="700"></text><text x="71.25" y="183.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="276.25" y="165.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="276.25" y="183.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="71.25" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="71.25" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="173.75" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="173.75" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="276.25" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="276.25" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="71.25" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">└</text><text x="71.25" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="173.75" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">─</text><text x="173.75" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="276.25" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="276.25" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text></svg><figcaption>原始盘面 · 格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="奇偶 · 通道的选择"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 327.5,20 327.5,122.5 225,122.5 225,225 122.5,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,122.5 122.5,122.5 122.5,225 20,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,122.5 327.5,122.5 327.5,225 225,225" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,225 122.5,225 122.5,327.5 20,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,225 225,225 225,327.5 122.5,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,225 327.5,225 327.5,327.5 225,327.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,327.5 122.5,327.5 122.5,430 20,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,327.5 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c5</p></details></div><h3>推理依据</h3><ul><li>c0 为第3步,要求奇</li><li>c7 必须上与右拐角</li><li>c8 必须左右直行</li></ul><p>关键分叉:第 3 步应走 c0,诱惑路线走 c5。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c0 后:c3 → c1 → c5 → c6 → c9 → c8 → c7 → c4 → c2 → c0</p><p>解除 direction:c7 后:c3 → c1 → c0 → c2 → c4 → c5 → c6 → c9 → c8 → c7</p><p>解除 direction:c8 后:c3 → c1 → c0 → c2 → c4 → c7 → c8 → c5 → c6 → c9</p></details></article><article><h2>25 · 第3章 · 理解与应用 · 两角相接</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="两角相接"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 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font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="62.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text></svg></figure><p>c12 → c8 → c9 → c5 → c6 → c10 → c11 → c7 → c3 → c2 → c1 → c0 → c4</p></details></div><h3>推理依据</h3><ul><li>c6 必须下与左拐角</li><li>c10 必须上与右拐角</li><li>墙 c4—c8 封闭该邻接</li></ul><p>关键分叉:第 5 步应走 c6,诱惑路线走 c4。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c6 后:c12 → c8 → c9 → c5 → c4 → c0 → c1 → c2 → c3 → c7 → c6 → c10 → c11</p><p>解除 direction:c10 后:c12 → c8 → c9 → c10 → c6 → c5 → c4 → c0 → c1 → c2 → c3 → c7 → c11</p><p>解除 wall:0 后:c12 → c8 → c4 → c0 → c1 → c2 → c3 → c7 → c11 → c10 → c6 → c5 → c9</p></details></article><article><h2>26 · 第3章 · 理解与应用 · 双色 · 通道的花园</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 295" role="img" 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font-weight="700">9</text><text x="147.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9 · └</text></svg></figure><p>c7 → c4 → c0 → c1 → c2 → c3 → c6 → c9 → c8 → c5</p></details></div><h3>推理依据</h3><ul><li>c2 必须左右直行</li><li>c9 必须上与右拐角</li><li>每步蓝橙交替</li></ul><p>关键分叉:第 6 步应走 c3,诱惑路线走 c5。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c2 后:c7 → c4 → c0 → c1 → c2 → c5 → c8 → c9 → c6 → c3</p><p>解除 direction:c9 后:c7 → c4 → c0 → c1 → c2 → c3 → c6 → c5 → c8 → c9</p><p>解除 alternation 后:c7 → c4 → c5 → c8 → c9 → c6 → c3 → c2 → c1 → c0</p></details></article><article><h2>27 · 第3章 · 理解与应用 · 双色 · 墙的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" 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YaHei" font-size="21" font-weight="700">2</text><text x="190" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text><text x="317.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10</text><text x="147.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="147.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text></svg></figure><p>c10 → c9 → c11 → c8 → c4 → c0 → c1 → c2 → c3 → c7 → c6 → c5</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c1—c5 封闭该邻接</li><li>墙 c6—c9 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c9,诱惑路线走 c7。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c10 → c7 → c3 → c2 → c1 → c0 → c4 → c8 → c11 → c9 → c5 → c6</p><p>解除 wall:0 后:c10 → c9 → c11 → c8 → c4 → c0 → c1 → c5 → c6 → c2 → c3 → c7</p><p>解除 wall:1 后:c10 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6 → c9 → c11 → c8</p></details></article><article><h2>28 · 第3章 · 理解与应用 · 奇偶 · 墙的花园</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="奇偶 · 墙的花园"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 275,20 275,105 190,105 190,190 105,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 360,105 360,190 275,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 105,190 105,275 20,275" fill="#f1eef9" 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="317.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text><text x="62.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10</text><text x="147.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="147.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="317.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">偶</text><text x="317.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text></svg><figcaption>原始盘面 · 格id用于对照JSON</figcaption></figure><details><summary>展开作者解与路线</summary><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="奇偶 · 墙的花园"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 275,20 275,105 190,105 190,190 105,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 360,105 360,190 275,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 105,190 105,275 20,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,190 190,190 190,275 105,275" 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">10</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">9</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="147.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="147.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="232.5" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="232.5" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="317.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">13</text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text><text x="62.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10</text><text x="147.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="147.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="317.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">12</text><text x="317.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12 · 偶</text></svg></figure><p>c10 → c11 → c7 → c6 → c3 → c0 → c1 → c2 → c5 → c4 → c8 → c12 → c9</p></details></div><h3>推理依据</h3><ul><li>c12 为第12步,要求偶</li><li>墙 c5—c9 封闭该邻接</li></ul><p>关键分叉:第 12 步应走 c12,诱惑路线走 c9。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c12 后:c10 → c11 → c7 → c6 → c3 → c0 → c1 → c2 → c5 → c4 → c8 → c9 → c12</p><p>解除 wall:0 后:c10 → c11 → c7 → c6 → c3 → c0 → c1 → c4 → c8 → c12 → c9 → c5 → c2</p></details></article><article><h2>29 · 第3章 · 理解与应用 · 引导 · 门随脚步切换</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="引导 · 门随脚步切换"><polygon points="20,20 190,20 190,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 360,20 360,190 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font-weight="700">3</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">t3</text></svg></figure><p>t0 → t1 → t3 → t2</p></details></div><h3>推理依据</h3><ul><li>门 t2—t3 通过前按已走格数切换,通过后保持开启;正确解从第3步末端通过</li></ul><p>关键分叉:第 2 步应走 t1,诱惑路线走 t2。排除依据:这一步门是关闭的。</p><details><summary>逐项机制必要性反例</summary><p>解除 door:0 后:t0 → t2 → t3 → t1</p></details></article><article><h2>30 · 第3章 · 理解与应用 · 通道 · 奇偶 · 墙 · 门的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 奇偶 · 墙 · 门的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 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c3</p><p>解除 door:0 后:c11 → c12 → c13 → c9 → c10 → c6 → c3 → c2 → c5 → c1 → c0 → c4 → c7 → c8</p></details></article><article><h2>31 · 第4章 · 理解与应用 · 墙和门分开看</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="墙和门分开看"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 360,20 360,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 105,190 105,275 20,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,190 190,190 190,275 105,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 275,190 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font-size="10" fill="#665c78">c0</text><text x="147.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="275" y="97" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="275" y="115" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="62.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="62.5" 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c9 → c10 → c11</p><p>解除 door:0 后:c0 → c3 → c4 → c1 → c2 → c8 → c7 → c11 → c10 → c9 → c5 → c6</p></details></article><article><h2>32 · 第4章 · 理解与应用 · 通道 · 双色 · 墙 · 门的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色 · 墙 · 门的选择"><polygon points="275,20 360,20 360,105 275,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,20 190,20 190,105 20,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 360,105 360,190 275,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,275 20,275" fill="#ffae55" stroke="#aaa1c7" 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c11,诱惑路线走 c7。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c11 后:c2 → c5 → c8 → c7 → c4 → c1 → c0 → c3 → c6 → c9 → c10 → c11</p><p>解除 wall:0 后:c2 → c5 → c8 → c11 → c10 → c9 → c6 → c7 → c4 → c1 → c0 → c3</p><p>解除 door:0 后:c2 → c5 → c8 → c11 → c10 → c9 → c6 → c3 → c0 → c1 → c4 → c7</p></details></article><article><h2>34 · 第4章 · 理解与应用 · 通道 · 双色 · 墙 · 门的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色 · 墙 · 门的选择"><polygon points="20,20 190,20 190,105 20,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 105,190 105,275 20,275" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,275 105,275 105,360 20,360" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#64acf3" stroke="#aaa1c7" 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font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="275" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">13</text><text x="275" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text><text x="232.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="232.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11 · ┐</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="317.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">12</text><text x="317.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text></svg></figure><p>c7 → c11 → c12 → c8 → c4 → c0 → c1 → c2 → c3 → c6 → c10 → c13 → c9 → c5</p></details></div><h3>推理依据</h3><ul><li>c11 必须下与左拐角</li><li>每步蓝橙交替</li><li>墙 c8—c9 封闭该邻接</li><li>门 c3—c6 通过前按已走格数切换,通过后保持开启;正确解从第9步末端通过</li></ul><p>关键分叉:第 2 步应走 c11,诱惑路线走 c0。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c11 后:c7 → c0 → c1 → c2 → c3 → c6 → c10 → c13 → c9 → c5 → c4 → c8 → c12 → c11</p><p>解除 alternation 后:c7 → c11 → c12 → c8 → c4 → c0 → c1 → c2 → c3 → c6 → c5 → c9 → c10 → c13</p><p>解除 wall:0 后:c7 → c11 → c12 → c8 → c9 → c5 → c4 → c0 → c1 → c2 → c3 → c6 → c10 → c13</p><p>解除 door:0 后:c7 → c11 → c12 → c8 → c4 → c5 → c9 → c13 → c10 → c6 → c3 → c2 → c1 → c0</p></details></article><article><h2>35 · 第4章 · 理解与应用 · 引导 · 六向共边</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 276.71361036774664 450.00000000000006" role="img" aria-label="引导 · 六向共边"><polygon points="155.26492021014093,78.57142857142858 121.4486901576057,137.14285714285717 53.816230052535246,137.14285714285717 20,78.57142857142858 53.816230052535204,20.000000000000007 121.4486901576057,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="155.26492021014093,195.71428571428575 121.4486901576057,254.28571428571433 53.816230052535246,254.28571428571433 20,195.71428571428575 53.816230052535204,137.14285714285717 121.4486901576057,137.14285714285717" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="155.26492021014093,312.8571428571429 121.4486901576057,371.42857142857144 53.816230052535246,371.42857142857144 20,312.8571428571429 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t5</p></details></div><h3>推理依据</h3><ul></ul><p>关键分叉:第 0 步应走 t0,诱惑路线走 数字不符的候选路线。排除依据:基础数字约束。</p><details><summary>逐项机制必要性反例</summary></details></article><article><h2>36 · 第4章 · 理解与应用 · 门 · 奇偶的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="门 · 奇偶的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 190,105 190,190 105,190 105,275 20,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 360,105 360,190 275,190" fill="#f1eef9" 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c9</p></details></div><h3>推理依据</h3><ul><li>c4 必须右与下拐角</li><li>墙 c8—c9 封闭该邻接</li><li>门 c5—c4 通过前按已走格数切换,通过后保持开启;正确解从第9步末端通过</li></ul><p>关键分叉:第 10 步应走 c4,诱惑路线走 c9。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c4 后:c0 → c1 → c2 → c3 → c7 → c11 → c10 → c6 → c5 → c9 → c13 → c12 → c8 → c4</p><p>解除 wall:0 后:c0 → c1 → c2 → c3 → c7 → c11 → c10 → c6 → c5 → c4 → c8 → c9 → c13 → c12</p><p>解除 door:0 后:c0 → c1 → c2 → c3 → c7 → c11 → c10 → c9 → c13 → c12 → c8 → c4 → c5 → c6</p></details></article><article><h2>40 · 第4章 · 理解与应用 · 上下通道</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="上下通道"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 225,20 225,122.5 122.5,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,20 327.5,20 327.5,122.5 225,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon 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fill="#665c78">c14</text></svg></figure><p>c14 → c11 → c10 → c13 → c12 → c8 → c9 → c5 → c4 → c0 → c1 → c2 → c3 → c7 → c6</p></details></div><h3>推理依据</h3><ul><li>c1 为第11步,要求奇</li><li>墙 c4—c8 封闭该邻接</li><li>门 c3—c7 通过前按已走格数切换,通过后保持开启;正确解从第13步末端通过</li></ul><p>关键分叉:第 4 步应走 c13,诱惑路线走 c6。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c1 后:c14 → c11 → c10 → c6 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c9 → c8 → c12 → c13</p><p>解除 wall:0 后:c14 → c11 → c10 → c13 → c12 → c8 → c4 → c0 → c1 → c2 → c3 → c7 → c6 → c5 → c9</p><p>解除 door:0 后:c14 → c11 → c10 → c13 → c12 → c8 → c9 → c5 → c4 → c0 → c1 → c2 → c6 → c7 → c3</p></details></article><article><h2>42 · 第5章 · 交错推理 · 第一座桥</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="第一座桥"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" 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fill="#665c78">c11</text><text x="317.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="317.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text></svg></figure><p>c12 → c11 → c10 → c9 → c7 → c5 → c4 → c0 → c1 → c2 → c3 → c6 → c8</p></details></div><h3>推理依据</h3><ul><li>墙 c1—c5 封闭该邻接</li><li>墙 c5—c10 封闭该邻接</li></ul><p>关键分叉:第 6 步应走 c5,诱惑路线走 c4。排除依据:永久墙不能穿过。</p><details><summary>逐项机制必要性反例</summary><p>解除 wall:0 后:c12 → c11 → c10 → c9 → c7 → c4 → c0 → c1 → c5 → c2 → c3 → c6 → c8</p><p>解除 wall:1 后:c12 → c11 → c5 → c10 → c9 → c7 → c4 → c0 → c1 → c2 → c3 → c6 → c8</p></details></article><article><h2>43 · 第5章 · 交错推理 · 奇偶 · 墙的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="奇偶 · 墙的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 275,20 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c4</p><p>解除 wall:0 后:c11 → c12 → c8 → c7 → c3 → c0 → c1 → c4 → c5 → c9 → c10 → c6 → c2</p></details></article><article><h2>44 · 第5章 · 交错推理 · 通道 · 墙 · 门的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 墙 · 门的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,105 275,105 275,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,105 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c10 → c11 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6</p></details></article><article><h2>45 · 第5章 · 交错推理 · 引导 · 从哪里出发</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="引导 · 从哪里出发"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 133.33333333333331,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 360,20 360,133.33333333333331 246.66666666666666,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,133.33333333333331 133.33333333333331,133.33333333333331 133.33333333333331,246.66666666666666 20,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,133.33333333333331 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c3</p></details></div><h3>推理依据</h3><ul><li>c13 为第12步,要求偶</li><li>c1 必须右与下拐角</li><li>墙 c3—c7 封闭该邻接</li><li>门 c2—c3 通过前按已走格数切换,通过后保持开启;正确解从第15步末端通过</li></ul><p>关键分叉:第 9 步应走 c8,诱惑路线走 c3。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c13 后:c14 → c15 → c12 → c9 → c5 → c1 → c0 → c4 → c3 → c2 → c6 → c10 → c13 → c11 → c7 → c8</p><p>解除 direction:c1 后:c14 → c15 → c12 → c9 → c5 → c4 → c8 → c7 → c11 → c13 → c10 → c6 → c2 → c3 → c0 → c1</p><p>解除 wall:0 后:c14 → c15 → c12 → c9 → c5 → c1 → c0 → c4 → c8 → c7 → c3 → c2 → c6 → c10 → c11 → c13</p><p>解除 door:0 后:c14 → c15 → c12 → c9 → c5 → c1 → c0 → c3 → c2 → c6 → c10 → c13 → c11 → c7 → c8 → c4</p></details></article><article><h2>48 · 第5章 · 交错推理 · 大块改变节拍</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="大块改变节拍"><polygon points="20,20 102,20 102,102 20,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,20 184,20 184,102 102,102" fill="#f1eef9" 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font-weight="700">4</text><text x="275" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10 · 偶</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="317.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text></svg></figure><p>c11 → c12 → c13 → c10 → c9 → c6 → c3 → c2 → c1 → c0 → c4 → c7 → c8 → c5</p></details></div><h3>推理依据</h3><ul><li>c10 为第4步,要求偶</li><li>c8 必须左与上拐角</li><li>墙 c4—c5 封闭该邻接</li><li>门 c4—c7 通过前按已走格数切换,通过后保持开启;正确解从第11步末端通过</li></ul><p>关键分叉:第 4 步应走 c10,诱惑路线走 c9。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c10 后:c11 → c12 → c13 → c9 → c10 → c3 → c6 → c2 → c1 → c0 → c4 → c7 → c8 → c5</p><p>解除 direction:c8 后:c11 → c12 → c8 → c9 → c13 → c10 → c3 → c2 → c6 → c5 → c1 → c0 → c4 → c7</p><p>解除 wall:0 后:c11 → c7 → c8 → c5 → c4 → c0 → c1 → c2 → c3 → c6 → c9 → c10 → c13 → c12</p><p>解除 door:0 后:c11 → c12 → c13 → c10 → c9 → c6 → c3 → c2 → c1 → c5 → c8 → c7 → c4 → c0</p></details></article><article><h2>50 · 第5章 · 交错推理 · 门随脚步开关</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="门随脚步开关"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 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fill="#665c78">c14</text></svg></figure><p>c9 → c8 → c11 → c12 → c13 → c14 → c10 → c7 → c3 → c2 → c6 → c5 → c4 → c0 → c1</p></details></div><h3>推理依据</h3><ul><li>c13 为第5步,要求奇</li><li>c2 必须右与下拐角</li></ul><p>关键分叉:第 2 步应走 c8,诱惑路线走 c6。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c13 后:c9 → c6 → c2 → c3 → c7 → c10 → c14 → c13 → c12 → c11 → c8 → c5 → c4 → c0 → c1</p><p>解除 direction:c2 后:c9 → c8 → c11 → c12 → c13 → c14 → c10 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6</p></details></article><article><h2>52 · 第6章 · 交错推理 · 通道 · 墙的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="通道 · 墙的选择"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 225,20 225,122.5 122.5,122.5" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,20 327.5,20 327.5,122.5 225,122.5" fill="#f1eef9" stroke="#aaa1c7" 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fill="#665c78">c14</text></svg></figure><p>c14 → c11 → c7 → c8 → c12 → c9 → c13 → c10 → c6 → c2 → c1 → c5 → c4 → c0 → c3</p></details></div><h3>推理依据</h3><ul><li>c4 为第13步,要求奇</li><li>墙 c3—c4 封闭该邻接</li><li>门 c1—c5 通过前按已走格数切换,通过后保持开启;正确解从第11步末端通过</li></ul><p>关键分叉:第 3 步应走 c7,诱惑路线走 c12。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c4 后:c14 → c11 → c12 → c9 → c5 → c4 → c8 → c7 → c3 → c0 → c1 → c2 → c6 → c10 → c13</p><p>解除 wall:0 后:c14 → c11 → c7 → c8 → c12 → c9 → c13 → c10 → c6 → c2 → c1 → c5 → c4 → c3 → c0</p><p>解除 door:0 后:c14 → c11 → c12 → c9 → c8 → c7 → c3 → c0 → c4 → c5 → c1 → c2 → c6 → c10 → c13</p></details></article><article><h2>55 · 第6章 · 交错推理 · 通道 · 双色 · 墙 · 门的交错</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色 · 墙 · 门的交错"><polygon points="275,20 360,20 360,105 275,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#ffae55" 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direction:c3 后:c0 → c1 → c2 → c6 → c5 → c8 → c4 → c11 → c12 → c9 → c13 → c10 → c7 → c3</p><p>解除 alternation 后:c0 → c1 → c5 → c4 → c11 → c12 → c8 → c9 → c13 → c10 → c7 → c3 → c2 → c6</p><p>解除 wall:0 后:c0 → c1 → c2 → c3 → c7 → c6 → c5 → c8 → c4 → c11 → c12 → c9 → c13 → c10</p><p>解除 door:0 后:c0 → c1 → c2 → c3 → c7 → c10 → c13 → c9 → c12 → c11 → c4 → c8 → c5 → c6</p></details></article><article><h2>56 · 第6章 · 交错推理 · 奇偶 · 墙 · 门的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="奇偶 · 墙 · 门的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 360,20 360,105 275,105 275,190 190,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 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font-family="system-ui" font-size="10" fill="#665c78">c11</text></svg></figure><p>c8 → c9 → c5 → c2 → c1 → c4 → c7 → c11 → c10 → c6 → c3 → c0</p></details></div><h3>推理依据</h3><ul><li>c10 为第9步,要求奇</li><li>墙 c3—c4 封闭该邻接</li><li>门 c7—c11 通过前按已走格数切换,通过后保持开启;正确解从第7步末端通过</li></ul><p>关键分叉:第 5 步应走 c1,诱惑路线走 c4。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c10 后:c8 → c9 → c5 → c2 → c4 → c1 → c0 → c3 → c6 → c10 → c11 → c7</p><p>解除 wall:0 后:c8 → c9 → c5 → c2 → c1 → c0 → c3 → c4 → c7 → c6 → c10 → c11</p><p>解除 door:0 后:c8 → c9 → c5 → c2 → c1 → c0 → c3 → c6 → c10 → c11 → c7 → c4</p></details></article><article><h2>57 · 第6章 · 交错推理 · 顺着节拍收尾</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="顺着节拍收尾"><polygon points="20,20 102,20 102,102 20,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,20 184,20 184,102 102,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,20 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c3。排除依据:这一步门是关闭的。</p><details><summary>逐项机制必要性反例</summary><p>解除 door:0 后:c13 → c11 → c8 → c4 → c0 → c1 → c2 → c3 → c7 → c10 → c12 → c9 → c5 → c6</p></details></article><article><h2>58 · 第6章 · 交错推理 · 奇偶分配区域</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="奇偶分配区域"><polygon points="20,20 102,20 102,102 20,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,20 184,20 184,102 102,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,20 266,20 266,102 184,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,20 348,20 348,102 266,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,102 102,102 102,184 20,184" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,102 184,102 184,184 102,184" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,102 266,102 266,184 184,184" fill="#f1eef9" stroke="#aaa1c7" 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YaHei" font-size="21" font-weight="700">10</text><text x="173.75" y="183.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="276.25" y="165.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="276.25" y="183.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="71.25" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="71.25" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="173.75" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">9</text><text x="173.75" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="276.25" y="268.25" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="276.25" y="286.25" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8 · ┘</text><text x="71.25" y="370.75" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="71.25" y="388.75" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text></svg></figure><p>c9 → c6 → c3 → c0 → c1 → c2 → c5 → c8 → c7 → c4</p></details></div><h3>推理依据</h3><ul><li>c1 必须左右直行</li><li>c8 必须左与上拐角</li><li>墙 c6—c7 封闭该邻接</li><li>门 c1—c2 通过前按已走格数切换,通过后保持开启;正确解从第5步末端通过</li></ul><p>关键分叉:第 6 步应走 c2,诱惑路线走 c4。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c1 后:c9 → c6 → c3 → c0 → c1 → c4 → c7 → c8 → c5 → c2</p><p>解除 direction:c8 后:c9 → c6 → c3 → c0 → c1 → c2 → c5 → c4 → c7 → c8</p><p>解除 wall:0 后:c9 → c6 → c7 → c8 → c5 → c4 → c3 → c0 → c1 → c2</p><p>解除 door:0 后:c9 → c6 → c3 → c4 → c7 → c8 → c5 → c2 → c1 → c0</p></details></article><article><h2>60 · 第6章 · 交错推理 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c6 → c0 → c3</p></details></div><h3>推理依据</h3><ul><li>c8 必须左右直行</li><li>c11 必须左与上拐角</li><li>门 c9—c8 通过前按已走格数切换,通过后保持开启;正确解从第5步末端通过</li></ul><p>关键分叉:第 3 步应走 c4,诱惑路线走 c0。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c8 后:c2 → c1 → c0 → c6 → c10 → c11 → c7 → c3 → c4 → c5 → c9 → c8</p><p>解除 direction:c11 后:c2 → c1 → c4 → c5 → c9 → c8 → c7 → c3 → c0 → c6 → c10 → c11</p><p>解除 door:0 后:c2 → c1 → c0 → c6 → c10 → c11 → c7 → c8 → c9 → c5 → c4 → c3</p></details></article><article><h2>62 · 第7章 · 交错推理 · 通道 · 墙 · 门的交错</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="通道 · 墙 · 门的交错"><polygon points="184,20 266,20 266,102 184,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,20 184,20 184,102 102,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,20 102,20 102,102 20,102" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,102 348,102 348,184 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x="61" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="61" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="225" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="225" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c15</text><text x="143" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">10</text><text x="143" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c16</text></svg></figure><p>c3 → c4 → c0 → c1 → c2 → c6 → c10 → c14 → c13 → c16 → c15 → c12 → c11 → c7 → c8 → c9 → c5</p></details></div><h3>推理依据</h3><ul><li>c11 必须左与上拐角</li><li>墙 c8—c12 封闭该邻接</li><li>墙 c5—c6 封闭该邻接</li><li>门 c15—c12 通过前按已走格数切换,通过后保持开启;正确解从第11步末端通过</li></ul><p>关键分叉:第 2 步应走 c4,诱惑路线走 c7。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c11 后:c3 → c7 → c8 → c9 → c5 → c4 → c0 → c1 → c2 → c6 → c10 → c14 → c13 → c16 → c15 → c12 → c11</p><p>解除 wall:0 后:c3 → c7 → c11 → c12 → c8 → c9 → c5 → c4 → c0 → c1 → c2 → c6 → c10 → c14 → c13 → c16 → c15</p><p>解除 wall:1 后:c3 → c4 → c0 → c1 → c2 → c6 → c5 → c9 → c10 → c14 → c13 → c16 → c15 → c12 → c11 → c7 → c8</p><p>解除 door:0 后:c3 → c7 → c11 → c12 → c15 → c16 → c13 → c14 → c10 → c6 → c2 → c1 → c0 → c4 → c5 → c9 → c8</p></details></article><article><h2>63 · 第7章 · 交错推理 · 拼块 · 出口布局 63</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 63"><polygon points="20,20 88,20 88,88 20,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,156 156,156" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 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font-size="19.72" font-weight="700">14</text><text x="190" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c21</text><text x="258" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">15</text><text x="258" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22 · ┘</text><text x="326" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">24</text><text x="326" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c0 → c5 → c9 → c14 → c19 → c20 → c15 → c10 → c6 → c1 → c2 → c11 → c16 → c21 → c22 → c17 → c12 → c7 → c3 → c4 → c8 → c13 → c18 → c23</p></details></div><h3>推理依据</h3><ul><li>c22 必须左与上拐角</li><li>每步蓝橙交替</li><li>墙 c17—c18 封闭该邻接</li></ul><p>关键分叉:第 16 步应走 c17,诱惑路线走 c23。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c22 后:c0 → c5 → c9 → c14 → c19 → c20 → c15 → c10 → c6 → c1 → c2 → c11 → c16 → c21 → c22 → c23 → c18 → c13 → c8 → c4 → c3 → c7 → c12 → c17</p><p>解除 alternation 后:c0 → c1 → c6 → c5 → c9 → c10 → c11 → c16 → c15 → c14 → c19 → c20 → c21 → c22 → c17 → c12 → c7 → c2 → c3 → c4 → c8 → c13 → c18 → c23</p><p>解除 wall:0 后:c0 → c5 → c9 → c14 → c19 → c20 → c15 → c10 → c6 → c1 → c2 → c7 → c3 → c4 → c8 → c13 → c12 → c11 → c16 → c21 → c22 → c17 → c18 → c23</p></details></article><article><h2>64 · 第7章 · 交错推理 · 奇偶 · 墙的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="奇偶 · 墙的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,190 275,190" fill="#f1eef9" stroke="#aaa1c7" 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c4 → c0 → c1 → c2</p><p>解除 parity:c10 后:c13 → c10 → c9 → c12 → c11 → c7 → c8 → c5 → c6 → c3 → c2 → c1 → c0 → c4</p><p>解除 wall:0 后:c13 → c12 → c11 → c7 → c8 → c5 → c6 → c9 → c10 → c3 → c2 → c1 → c0 → c4</p><p>解除 wall:1 后:c13 → c12 → c11 → c7 → c4 → c0 → c1 → c5 → c8 → c9 → c10 → c3 → c2 → c6</p></details></article><article><h2>65 · 第7章 · 交错推理 · 双色 · 奇偶的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 347.5 450" role="img" aria-label="双色 · 奇偶的选择"><polygon points="20,20 122.5,20 122.5,122.5 20,122.5" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,20 225,20 225,122.5 122.5,122.5" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="225,20 327.5,20 327.5,122.5 225,122.5" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,122.5 122.5,122.5 122.5,327.5 20,327.5" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="122.5,122.5 225,122.5 225,225 122.5,225" fill="#64acf3" 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font-size="10" fill="#665c78">c22</text><text x="326" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">3</text><text x="326" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c17 → c18 → c23 → c22 → c21 → c16 → c12 → c13 → c14 → c9 → c4 → c3 → c8 → c7 → c2 → c1 → c0 → c5 → c6 → c11 → c10 → c15 → c19 → c20</p></details></div><h3>推理依据</h3><ul><li>c14 必须左与上拐角</li><li>c21 必须上与右拐角</li><li>门 c8—c7 通过前按已走格数切换,通过后保持开启;正确解从第13步末端通过</li></ul><p>关键分叉:第 2 步应走 c18,诱惑路线走 c16。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c14 后:c17 → c16 → c21 → c22 → c23 → c18 → c14 → c9 → c4 → c3 → c8 → c13 → c12 → c7 → c2 → c1 → c0 → c5 → c6 → c11 → c10 → c15 → c19 → c20</p><p>解除 direction:c21 后:c17 → c16 → c12 → c13 → c14 → c9 → c4 → c3 → c8 → c7 → c2 → c1 → c0 → c5 → c6 → c11 → c10 → c15 → c19 → c20 → c21 → c22 → c23 → c18</p><p>解除 door:0 后:c17 → c18 → c23 → c22 → c21 → c16 → c12 → c11 → c6 → c7 → c8 → c13 → c14 → c9 → c4 → c3 → c2 → c1 → c0 → c5 → c10 → c15 → c19 → c20</p></details></article><article><h2>68 · 第7章 · 交错推理 · 方格 · 交错挑战 68</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 312" role="img" aria-label="方格 · 交错挑战 68"><polygon points="20,20 88,20 88,88 20,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 292,20 292,88 224,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="292,20 360,20 360,88 292,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,88 88,88 88,156 20,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,88 156,88 156,156 88,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,88 224,88 224,156 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→ c3 → c2 → c1 → c0 → c5 → c6 → c7 → c12 → c11 → c10 → c15 → c16 → c17 → c18 → c19 → c14 → c9 → c8 → c13</p></details></div><h3>推理依据</h3><ul><li>c8 必须右与下拐角</li><li>c12 必须左与上拐角</li><li>c14 必须上下直行</li><li>墙 c13—c18 封闭该邻接</li><li>墙 c6—c11 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c3,诱惑路线走 c9。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c8 后:c4 → c9 → c14 → c19 → c18 → c17 → c16 → c15 → c10 → c11 → c12 → c7 → c6 → c5 → c0 → c1 → c2 → c3 → c8 → c13</p><p>解除 direction:c12 后:c4 → c3 → c2 → c1 → c0 → c5 → c6 → c7 → c12 → c13 → c8 → c9 → c14 → c19 → c18 → c17 → c16 → c11 → c10 → c15</p><p>解除 direction:c14 后:c4 → c3 → c2 → c1 → c0 → c5 → c6 → c7 → c12 → c11 → c10 → c15 → c16 → c17 → c18 → c19 → c14 → c13 → c8 → c9</p><p>解除 wall:0 后:c4 → c3 → c2 → c1 → c0 → c5 → c6 → c7 → c12 → c11 → c10 → c15 → c16 → c17 → c18 → c13 → c8 → c9 → c14 → c19</p><p>解除 wall:1 后:c4 → c3 → c2 → c7 → c12 → c11 → c6 → c1 → c0 → c5 → c10 → c15 → c16 → c17 → c18 → c19 → c14 → c9 → c8 → 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YaHei" font-size="21" font-weight="700">9</text><text x="147.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text></svg></figure><p>c2 → c1 → c0 → c4 → c5 → c9 → c8 → c11 → c12 → c10 → c6 → c7 → c3</p></details></div><h3>推理依据</h3><ul><li>c0 为第3步,要求奇</li><li>墙 c1—c5 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c1,诱惑路线走 c3。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c0 后:c2 → c3 → c7 → c6 → c5 → c9 → c10 → c12 → c11 → c8 → c4 → c0 → c1</p><p>解除 wall:0 后:c2 → c3 → c7 → c6 → c5 → c1 → c0 → c4 → c8 → c11 → c12 → c9 → c10</p></details></article><article><h2>70 · 第7章 · 交错推理 · 通道 · 奇偶的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 奇偶的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,190 105,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 360,20 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x="161.66666666666666" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="218.33333333333331" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">22</text><text x="218.33333333333331" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">23</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c24</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">24</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c2 → c3 → c4 → c5 → c8 → c13 → c12 → c11 → c17 → c16 → c7 → c6 → c1 → c0 → c9 → c10 → c15 → c14 → c20 → c21 → c22 → c23 → c24 → c25 → c19 → c18</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c18—c24 封闭该邻接</li><li>墙 c16—c22 封闭该邻接</li><li>墙 c12—c18 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c3,诱惑路线走 c1。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c2 → c1 → c0 → c9 → c10 → c6 → c7 → c3 → c4 → c5 → c8 → c13 → c12 → c11 → c17 → c16 → c15 → c14 → c20 → c21 → c22 → c23 → c24 → c25 → c19 → c18</p><p>解除 wall:0 后:c2 → c3 → c4 → c5 → c8 → c13 → c12 → c11 → c17 → c16 → c7 → c6 → c1 → c0 → c9 → c10 → c15 → c14 → c20 → c21 → c22 → c23 → c24 → c18 → c19 → c25</p><p>解除 wall:1 后:c2 → c3 → c4 → c5 → c8 → c13 → c12 → c11 → c17 → c18 → c19 → c25 → c24 → c23 → c22 → c16 → c15 → c21 → c20 → c14 → c9 → c0 → c1 → c6 → c7 → c10</p><p>解除 wall:2 后:c2 → c3 → c4 → c5 → c8 → c13 → c12 → c18 → c19 → c25 → c24 → c23 → c22 → c21 → c20 → c14 → c15 → c10 → c9 → c0 → c1 → c6 → c7 → c11 → c17 → c16</p></details></article><article><h2>72 · 第8章 · 交错推理 · 通道 · 双色 · 墙 · 门的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色 · 墙 · 门的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 105,190 105,275 20,275" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,275 105,275 105,360 20,360" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,105 190,105 190,190 105,190" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,190 190,190 190,275 105,275" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,275 190,275 190,360 105,360" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 360,20 360,105 190,105" 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c1。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c2 后:c3 → c2 → c1 → c0 → c4 → c8 → c9 → c11 → c10 → c7 → c6 → c5</p><p>解除 direction:c4 后:c3 → c2 → c6 → c7 → c10 → c11 → c9 → c8 → c4 → c5 → c1 → c0</p><p>解除 alternation 后:c3 → c2 → c6 → c5 → c1 → c0 → c4 → c8 → c11 → c9 → c10 → c7</p><p>解除 wall:0 后:c3 → c2 → c6 → c7 → c10 → c11 → c9 → c5 → c1 → c0 → c4 → c8</p><p>解除 door:0 后:c3 → c2 → c6 → c7 → c10 → c11 → c9 → c8 → c4 → c0 → c1 → c5</p></details></article><article><h2>73 · 第8章 · 交错推理 · 通道 · 双色的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 双色的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 275,20 275,105 105,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" 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c5,诱惑路线走 c9。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c12 后:c1 → c0 → c4 → c7 → c11 → c8 → c9 → c5 → c2 → c3 → c6 → c10 → c13 → c12</p><p>解除 wall:0 后:c1 → c0 → c4 → c7 → c11 → c8 → c12 → c13 → c10 → c9 → c5 → c2 → c3 → c6</p><p>解除 door:0 后:c1 → c0 → c4 → c7 → c11 → c8 → c5 → c2 → c3 → c6 → c10 → c9 → c12 → c13</p></details></article><article><h2>75 · 第8章 · 交错推理 · 方格 · 出口布局 75</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="方格 · 出口布局 75"><polygon points="88,20 156,20 156,88 88,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 292,20 292,88 224,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="292,20 360,20 360,88 292,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,88 88,88 88,156 20,156" fill="#f1eef9" stroke="#aaa1c7" 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x="303.3333333333333" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c12 → c13 → c18 → c19 → c14 → c8 → c3 → c2 → c7 → c6 → c1 → c0 → c5 → c11 → c16 → c17 → c22 → c23 → c24 → c25 → c21 → c20 → c15 → c9 → c10 → c4</p></details></div><h3>推理依据</h3><ul><li>c9 为第24步,要求偶</li><li>墙 c6—c12 封闭该邻接</li><li>墙 c5—c6 封闭该邻接</li></ul><p>关键分叉:第 3 步应走 c18,诱惑路线走 c14。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c9 后:c12 → c13 → c14 → c15 → c9 → c8 → c3 → c2 → c7 → c6 → c1 → c0 → c5 → c11 → c16 → c17 → c22 → c23 → c18 → c19 → c24 → c25 → c20 → c21 → c10 → c4</p><p>解除 wall:0 后:c12 → c6 → c7 → c13 → c18 → c23 → c22 → c17 → c16 → c11 → c5 → c0 → c1 → c2 → c3 → c8 → c14 → c19 → c24 → c25 → c21 → c20 → c15 → c9 → c10 → c4</p><p>解除 wall:1 后:c12 → c11 → c16 → c17 → c22 → c23 → c18 → c13 → c7 → c6 → c5 → c0 → c1 → c2 → c3 → c8 → c14 → c19 → c24 → c25 → c21 → c20 → c15 → c9 → c10 → c4</p></details></article><article><h2>77 · 第8章 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font-weight="700">12</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c14 → c15 → c10 → c9 → c8 → c7 → c13 → c17 → c18 → c19 → c20 → c25 → c24 → c23 → c22 → c21 → c16 → c12 → c11 → c6 → c0 → c1 → c2 → c3 → c4 → c5</p></details></div><h3>推理依据</h3><ul><li>c17 必须上与右拐角</li><li>每步蓝橙交替</li><li>门 c22—c21 通过前按已走格数切换,通过后保持开启;正确解从第15步末端通过</li></ul><p>关键分叉:第 2 步应走 c15,诱惑路线走 c9。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c17 后:c14 → c9 → c8 → c7 → c13 → c17 → c22 → c23 → c18 → c19 → c24 → c25 → c20 → c15 → c10 → c5 → c4 → c3 → c2 → c1 → c0 → c6 → c11 → c12 → c16 → c21</p><p>解除 alternation 后:c14 → c15 → c10 → c9 → c8 → c7 → c13 → c17 → c18 → c19 → c20 → c25 → c24 → c23 → c22 → c21 → c16 → c11 → c12 → c6 → c0 → c1 → c2 → c3 → c4 → c5</p><p>解除 door:0 后:c14 → c9 → c4 → c5 → c10 → c15 → c20 → c19 → c18 → c17 → c13 → c7 → c8 → c3 → c2 → c1 → c0 → c6 → c11 → c12 → c16 → c21 → c22 → 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→ c16 → c14 → c11 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6 → c10 → c13</p></details></article><article><h2>79 · 第8章 · 交错推理 · 通道 · 双色的交错</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="通道 · 双色的交错"><polygon points="20,20 102,20 102,102 20,102" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,20 184,20 184,102 102,102" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,20 266,20 266,102 184,102" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,20 348,20 348,102 266,102" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,102 184,102 184,184 20,184" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,102 266,102 266,184 184,184" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,102 348,102 348,184 266,184" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,184 102,184 102,266 20,266" 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c11 → c15 → c14 → c10 → c9 → c13</p><p>解除 direction:c15 后:c16 → c12 → c8 → c4 → c0 → c1 → c5 → c6 → c2 → c3 → c7 → c11 → c10 → c9 → c13 → c14 → c15</p><p>解除 wall:0 后:c16 → c12 → c8 → c9 → c13 → c14 → c15 → c11 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6 → c10</p><p>解除 wall:1 后:c16 → c12 → c13 → c14 → c15 → c11 → c10 → c6 → c7 → c3 → c2 → c1 → c0 → c4 → c8 → c9 → c5</p></details></article><article><h2>81 · 第9章 · 交错推理 · 方格 · 出口布局 81</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="方格 · 出口布局 81"><polygon points="20,20 88,20 88,88 20,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 292,20 292,88 224,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="292,20 360,20 360,88 292,88" fill="#f1eef9" 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">16</text><text x="258" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c20</text><text x="326" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">15</text><text x="326" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c21</text></svg></figure><p>c0 → c1 → c5 → c9 → c10 → c6 → c2 → c3 → c4 → c8 → c7 → c11 → c12 → c17 → c21 → c20 → c16 → c15 → c14 → c19 → c18 → c13</p></details></div><h3>推理依据</h3><ul><li>c14 必须右与下拐角</li><li>墙 c1—c2 封闭该邻接</li><li>门 c7—c11 通过前按已走格数切换,通过后保持开启;正确解从第11步末端通过</li></ul><p>关键分叉:第 20 步应走 c19,诱惑路线走 c13。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c14 后:c0 → c1 → c5 → c9 → c10 → c6 → c2 → c3 → c4 → c8 → c7 → c11 → c12 → c17 → c21 → c20 → c16 → c15 → c14 → c13 → c18 → c19</p><p>解除 wall:0 后:c0 → c1 → c2 → c3 → c4 → c8 → c7 → c6 → c5 → c9 → c10 → c11 → c12 → c17 → c21 → c20 → c16 → c15 → c14 → c19 → c18 → c13</p><p>解除 door:0 后:c0 → c1 → c5 → c9 → c10 → c11 → c7 → c6 → c2 → c3 → c4 → c8 → c12 → c17 → c21 → c20 → c16 → c15 → c14 → c19 → c18 → c13</p></details></article><article><h2>82 · 第9章 · 交错推理 · 方格 · 出口布局 82</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 82"><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 303.3333333333333,20 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→ c10 → c4</p><p>解除 wall:0 后:c3 → c2 → c1 → c0 → c5 → c4 → c10 → c16 → c22 → c23 → c17 → c11 → c12 → c18 → c19 → c24 → c25 → c20 → c21 → c15 → c9 → c8 → c14 → c13 → c7 → c6</p></details></article><article><h2>83 · 第9章 · 交错推理 · 拼块 · 出口布局 83</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 83"><polygon points="20,20 88,20 88,88 20,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,88 88,88 88,156 20,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,88 156,88 156,156 88,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,88 224,88 224,156 156,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,88 292,88 292,156 224,156" 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c13 → c12 → c8 → c7 → c11 → c15 → c16 → c17 → c18 → c19 → c14</p><p>解除 direction:c12 后:c0 → c3 → c4 → c1 → c2 → c5 → c6 → c10 → c14 → c19 → c18 → c17 → c13 → c9 → c8 → c7 → c11 → c12 → c16 → c15</p><p>解除 wall:0 后:c0 → c1 → c2 → c5 → c6 → c10 → c14 → c19 → c18 → c17 → c16 → c15 → c11 → c7 → c3 → c4 → c8 → c12 → c13 → c9</p></details></article><article><h2>84 · 第9章 · 交错推理 · 拼块 · 出口布局 84</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 84"><polygon points="88,20 156,20 156,88 88,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 292,20 292,88 224,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="292,20 360,20 360,88 292,88" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,88 88,88 88,156 20,156" fill="#64acf3" stroke="#aaa1c7" 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通过前按已走格数切换,通过后保持开启;正确解从第15步末端通过</li></ul><p>关键分叉:第 2 步应走 c5,诱惑路线走 c1。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c6 后:c0 → c1 → c2 → c3 → c7 → c11 → c10 → c9 → c6 → c5 → c4 → c8 → c16 → c17 → c12 → c13 → c18 → c19 → c15 → c14</p><p>解除 alternation 后:c0 → c5 → c4 → c8 → c16 → c17 → c12 → c13 → c18 → c19 → c14 → c15 → c11 → c7 → c3 → c2 → c1 → c6 → c9 → c10</p><p>解除 door:0 后:c0 → c5 → c4 → c8 → c16 → c17 → c12 → c13 → c18 → c19 → c15 → c14 → c10 → c11 → c7 → c3 → c2 → c1 → c6 → c9</p></details></article><article><h2>85 · 第9章 · 交错推理 · 拼块 · 出口布局 85</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 85"><polygon points="20,20 88,20 88,88 20,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 292,20 292,88 156,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon 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font-size="19.72" font-weight="700">16</text><text x="326" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c11 → c6 → c5 → c10 → c9 → c4 → c0 → c1 → c2 → c3 → c8 → c7 → c12 → c13 → c18 → c23 → c22 → c21 → c20 → c19 → c14 → c15 → c16 → c17</p></details></div><h3>推理依据</h3><ul><li>c10 必须左与上拐角</li><li>每步蓝橙交替</li></ul><p>关键分叉:第 2 步应走 c6,诱惑路线走 c10。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c10 后:c11 → c10 → c9 → c4 → c0 → c1 → c5 → c6 → c2 → c3 → c8 → c7 → c12 → c13 → c18 → c23 → c22 → c21 → c20 → c19 → c14 → c15 → c16 → c17</p><p>解除 alternation 后:c11 → c6 → c7 → c12 → c17 → c16 → c21 → c22 → c23 → c18 → c13 → c8 → c3 → c2 → c1 → c0 → c4 → c5 → c10 → c9 → c14 → c15 → c20 → c19</p></details></article><article><h2>86 · 第9章 · 交错推理 · 拼块 · 出口布局 86</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 86"><polygon points="20,20 88,20 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为第10步,要求偶</li><li>墙 c9—c10 封闭该邻接</li></ul><p>关键分叉:第 6 步应走 c5,诱惑路线走 c6。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c7 后:c20 → c16 → c17 → c12 → c11 → c6 → c5 → c0 → c1 → c2 → c7 → c8 → c3 → c4 → c9 → c14 → c13 → c18 → c21 → c22 → c23 → c19 → c15 → c10</p><p>解除 wall:0 后:c20 → c16 → c17 → c12 → c11 → c5 → c0 → c1 → c6 → c7 → c2 → c3 → c4 → c9 → c10 → c15 → c14 → c19 → c23 → c22 → c21 → c18 → c13 → c8</p></details></article><article><h2>88 · 第9章 · 交错推理 · 六边 · 交错挑战 88</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 442.9297141818125" role="img" aria-label="六边 · 交错挑战 88"><polygon points="91.57894736842105,50.99459339860096 73.6842105263158,81.98918679720192 37.894736842105274,81.98918679720192 20,50.99459339860097 37.894736842105246,20.000000000000004 73.6842105263158,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="145.26315789473685,81.98918679720192 127.36842105263159,112.9837801958029 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="324.2105263157895" y="383.9351207832116" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">16</text><text x="324.2105263157895" y="401.9351207832116" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c6 → c0 → c1 → c2 → c7 → c12 → c18 → c13 → c19 → c14 → c20 → c21 → c15 → c16 → c22 → c23 → c17 → c11 → c5 → c4 → c10 → c9 → c8 → c3</p></details></div><h3>推理依据</h3><ul><li>c10 为第21步,要求奇</li><li>墙 c3—c9 封闭该邻接</li><li>墙 c19—c20 封闭该邻接</li></ul><p>关键分叉:第 21 步应走 c10,诱惑路线走 c3。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c10 后:c6 → c0 → c1 → c2 → c7 → c12 → c18 → c13 → c19 → c14 → c20 → c21 → c15 → c16 → c22 → c23 → c17 → c11 → c5 → c4 → c3 → c8 → c9 → c10</p><p>解除 wall:0 后:c6 → c0 → c1 → c2 → c7 → c12 → c18 → c13 → c19 → c14 → c20 → c21 → c15 → c16 → c22 → c23 → c17 → c11 → c5 → c4 → c10 → c9 → c3 → c8</p><p>解除 wall:1 后:c6 → c0 → c1 → c2 → c7 → c12 → c18 → c13 → c14 → c19 → c20 → c21 → c15 → c16 → c22 → c23 → c17 → c11 → c5 → c4 → c10 → c9 → c8 → c3</p></details></article><article><h2>89 · 第9章 · 交错推理 · 拼块 · 换一种思路 89</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 换一种思路 89"><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 303.3333333333333,20 303.3333333333333,76.66666666666666 246.66666666666666,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="303.3333333333333,20 360,20 360,133.33333333333331 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c6 → c11 → c12 → c7 → c2 → c3 → c13 → c19 → c18 → c23 → c22 → c17 → c16</p><p>解除 wall:0 后:c1 → c0 → c4 → c5 → c6 → c11 → c10 → c9 → c8 → c14 → c20 → c21 → c15 → c16 → c17 → c22 → c23 → c18 → c19 → c13 → c12 → c7 → c3 → c2</p></details></article><article><h2>90 · 第9章 · 交错推理 · 拼块 · 出口布局 90</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 90"><polygon points="20,20 88,20 88,88 20,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 360,20 360,88 292,88 292,156 224,156" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,88 88,88 88,156 20,156" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,88 156,88 156,156 88,156" fill="#64acf3" stroke="#aaa1c7" 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c19 → c18 → c17 → c23 → c24 → c25 → c26 → c27 → c22 → c16 → c10 → c5 → c4 → c3 → c2 → c1 → c0</p><p>解除 direction:c14 后:c11 → c12 → c6 → c7 → c8 → c9 → c15 → c14 → c13 → c19 → c18 → c17 → c23 → c24 → c25 → c20 → c21 → c26 → c27 → c22 → c16 → c10 → c5 → c4 → c3 → c2 → c1 → c0</p></details></article><article><h2>92 · 第10章 · 交错推理 · 六边 · 出口布局 92</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 92"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 114.68544414709862,47.33333333333333" fill="#64acf3" stroke="#aaa1c7" 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x="256.7136103677465" y="410.71428571428567" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c11 → c7 → c8 → c3 → c9 → c14 → c13 → c12 → c17 → c18 → c19 → c20 → c25 → c24 → c23 → c22 → c21 → c16 → c15 → c10 → c6 → c2 → c1 → c5 → c4 → c0</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c18—c23 封闭该邻接</li><li>门 c13—c12 通过前按已走格数切换,通过后保持开启;正确解从第7步末端通过</li></ul><p>关键分叉:第 7 步应走 c13,诱惑路线走 c20。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c11 → c7 → c8 → c3 → c9 → c14 → c20 → c25 → c24 → c19 → c13 → c12 → c18 → c17 → c23 → c22 → c21 → c15 → c16 → c10 → c6 → c2 → c1 → c5 → c4 → c0</p><p>解除 wall:0 后:c11 → c7 → c8 → c3 → c9 → c14 → c19 → c20 → c25 → c24 → c23 → c18 → c13 → c12 → c17 → c22 → c21 → c16 → c15 → c10 → c6 → c2 → c1 → c5 → c4 → c0</p><p>解除 door:0 后:c11 → c10 → c15 → c16 → c21 → c22 → c23 → c24 → c25 → c20 → c19 → c18 → c17 → c12 → c13 → c14 → c9 → c3 → c8 → c7 → c6 → c2 → c1 → c5 → c4 → c0</p></details></article><article><h2>94 · 第10章 · 交错推理 · 方格 · 出口布局 94</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="方格 · 出口布局 94"><polygon points="20,20 88,20 88,88 20,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 292,20 292,88 224,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="292,20 360,20 360,88 292,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,88 88,88 88,156 20,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,88 156,88 156,156 88,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,88 224,88 224,156 156,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,88 292,88 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font-size="19.72" font-weight="700">15</text><text x="258" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c21 → c20 → c15 → c10 → c5 → c0 → c1 → c2 → c7 → c6 → c11 → c16 → c17 → c22 → c23 → c18 → c19 → c14 → c9 → c4 → c3 → c8 → c13 → c12</p></details></div><h3>推理依据</h3><ul><li>c22 必须上与右拐角</li><li>墙 c2—c3 封闭该邻接</li></ul><p>关键分叉:第 14 步应走 c22,诱惑路线走 c12。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c22 后:c21 → c20 → c15 → c10 → c5 → c0 → c1 → c2 → c7 → c6 → c11 → c16 → c17 → c12 → c13 → c8 → c3 → c4 → c9 → c14 → c19 → c18 → c23 → c22</p><p>解除 wall:0 后:c21 → c20 → c15 → c10 → c5 → c0 → c1 → c6 → c7 → c12 → c11 → c16 → c17 → c22 → c23 → c18 → c19 → c14 → c13 → c8 → c9 → c4 → c3 → c2</p></details></article><article><h2>95 · 第10章 · 交错推理 · 拼块 · 出口布局 95</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 95"><polygon points="20,20 88,20 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">1</text><text x="190" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="292" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">14</text><text x="292" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text><text x="54" y="250" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">4</text><text x="54" y="268" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="122" y="250" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">7</text><text x="122" y="268" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c15</text><text x="190" y="250" text-anchor="middle" font-family="system-ui,Microsoft YaHei" 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为第16步,要求偶</li><li>c3 必须左右直行</li><li>门 c1—c2 通过前按已走格数切换,通过后保持开启;正确解从第21步末端通过</li></ul><p>关键分叉:第 15 步应走 c9,诱惑路线走 c8。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c8 后:c12 → c11 → c10 → c14 → c19 → c20 → c15 → c16 → c21 → c22 → c23 → c18 → c17 → c13 → c8 → c9 → c4 → c3 → c2 → c7 → c6 → c1 → c0 → c5</p><p>解除 direction:c3 后:c12 → c11 → c10 → c14 → c19 → c20 → c15 → c16 → c21 → c22 → c23 → c18 → c17 → c13 → c9 → c4 → c3 → c8 → c7 → c6 → c5 → c0 → c1 → c2</p><p>解除 door:0 后:c12 → c7 → c6 → c5 → c10 → c11 → c15 → c14 → c19 → c20 → c21 → c16 → c17 → c22 → c23 → c18 → c13 → c8 → c9 → c4 → c3 → c2 → c1 → c0</p></details></article><article><h2>96 · 第10章 · 交错推理 · 拼块 · 出口布局 96</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 出口布局 96"><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#ffae55" 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c6</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c16—c22 封闭该邻接</li><li>墙 c13—c14 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c7,诱惑路线走 c17。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c11 → c17 → c23 → c22 → c21 → c20 → c14 → c10 → c9 → c13 → c19 → c18 → c12 → c8 → c4 → c5 → c0 → c1 → c2 → c3 → c7 → c16 → c15 → c6</p><p>解除 wall:0 后:c11 → c7 → c3 → c2 → c1 → c0 → c5 → c4 → c8 → c9 → c13 → c12 → c18 → c19 → c20 → c14 → c10 → c6 → c15 → c21 → c22 → c16 → c17 → c23</p><p>解除 wall:1 后:c11 → c7 → c3 → c2 → c1 → c0 → c5 → c4 → c8 → c9 → c10 → c14 → c13 → c12 → c18 → c19 → c20 → c21 → c22 → c23 → c17 → c16 → c15 → c6</p></details></article><article><h2>97 · 第10章 · 交错推理 · 六边 · 出口布局 97</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 97"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">17</text><text x="288.27542508344607" y="412.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c14 → c19 → c24 → c23 → c18 → c17 → c11 → c12 → c13 → c8 → c9 → c15 → c20 → c25 → c21 → c26 → c27 → c22 → c16 → c10 → c5 → c4 → c3 → c7 → c2 → c6 → c1 → c0</p></details></div><h3>推理依据</h3><ul><li>c23 为第4步,要求偶</li><li>墙 c14—c15 封闭该邻接</li></ul><p>关键分叉:第 4 步应走 c23,诱惑路线走 c18。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c23 后:c14 → c19 → c24 → c18 → c23 → c17 → c11 → c12 → c13 → c8 → c9 → c15 → c20 → c25 → c21 → c26 → c27 → c22 → c16 → c10 → c5 → c4 → c3 → c7 → c2 → c6 → c1 → c0</p><p>解除 wall:0 后:c14 → c15 → c9 → c8 → c13 → c12 → c11 → c17 → c18 → c23 → c24 → c19 → c20 → c25 → c21 → c26 → c27 → c22 → c16 → c10 → c5 → c4 → c3 → c7 → c2 → c6 → c1 → c0</p></details></article><article><h2>98 · 第10章 · 交错推理 · 六边 · 交错挑战 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c12。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c18 → c12 → c6 → c0 → c1 → c2 → c7 → c13 → c19 → c20 → c14 → c8 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c21 → c22 → c16 → c17 → c23</p><p>解除 wall:0 后:c18 → c12 → c6 → c0 → c1 → c7 → c2 → c3 → c4 → c5 → c11 → c10 → c15 → c9 → c8 → c14 → c13 → c19 → c20 → c21 → c22 → c16 → c17 → c23</p><p>解除 wall:1 后:c18 → c19 → c20 → c14 → c13 → c12 → c6 → c0 → c1 → c7 → c2 → c3 → c8 → c9 → c4 → c10 → c15 → c21 → c22 → c23 → c17 → c16 → c11 → c5</p></details></article><article><h2>99 · 第10章 · 交错推理 · 拼块 · 换一种思路 99</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 换一种思路 99"><polygon points="20,20 88,20 88,88 20,88" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#64acf3" stroke="#aaa1c7" 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font-size="19.72" font-weight="700">9</text><text x="326" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c0 → c1 → c2 → c3 → c4 → c9 → c14 → c19 → c23 → c22 → c21 → c20 → c15 → c10 → c5 → c6 → c11 → c16 → c17 → c18 → c13 → c8 → c7 → c12</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c16—c21 封闭该邻接</li><li>墙 c12—c17 封闭该邻接</li></ul><p>关键分叉:第 4 步应走 c3,诱惑路线走 c7。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c0 → c1 → c2 → c7 → c6 → c5 → c10 → c11 → c12 → c13 → c18 → c17 → c16 → c15 → c20 → c21 → c22 → c23 → c19 → c14 → c9 → c8 → c3 → c4</p><p>解除 wall:0 后:c0 → c1 → c2 → c3 → c4 → c9 → c14 → c19 → c23 → c22 → c17 → c16 → c21 → c20 → c15 → c10 → c5 → c6 → c11 → c12 → c7 → c8 → c13 → c18</p><p>解除 wall:1 后:c0 → c1 → c2 → c3 → c4 → c9 → c14 → c19 → c23 → c22 → c21 → c20 → c15 → c10 → c5 → c6 → c11 → c16 → c17 → c12 → c7 → c8 → c13 → c18</p></details></article><article><h2>100 · 第10章 · 交错推理 · 方格 · 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font-size="19.72" font-weight="700">3</text><text x="258" y="268" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c18</text><text x="326" y="250" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">4</text><text x="326" y="268" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c19</text></svg></figure><p>c16 → c17 → c18 → c19 → c14 → c13 → c12 → c11 → c6 → c7 → c8 → c9 → c4 → c3 → c2 → c1 → c0 → c5 → c10 → c15</p></details></div><h3>推理依据</h3><ul><li>c3 必须左右直行</li><li>墙 c9—c14 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c17,诱惑路线走 c15。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c3 后:c16 → c15 → c10 → c5 → c0 → c1 → c2 → c7 → c6 → c11 → c12 → c17 → c18 → c19 → c14 → c13 → c8 → c3 → c4 → c9</p><p>解除 wall:0 后:c16 → c15 → c10 → c11 → c12 → c13 → c8 → c7 → c6 → c5 → c0 → c1 → c2 → c3 → c4 → c9 → c14 → c19 → c18 → c17</p></details></article><article><h2>101 · 第11章 · 区域规划 · 拼块 · 出口布局 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="218.33333333333331" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">18</text><text x="218.33333333333331" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">19</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c24</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">20</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c7 → c6 → c12 → c17 → c16 → c15 → c10 → c11 → c5 → c1 → c0 → c4 → c3 → c9 → c20 → c21 → c22 → c23 → c24 → c25 → c19 → c18 → c13 → c14 → c8 → c2</p></details></div><h3>推理依据</h3><ul><li>c17 为第4步,要求偶</li><li>c13 必须右与下拐角</li><li>门 c3—c9 通过前按已走格数切换,通过后保持开启;正确解从第13步末端通过</li></ul><p>关键分叉:第 2 步应走 c6,诱惑路线走 c2。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c17 后:c7 → c2 → c8 → c14 → c13 → c18 → c19 → c25 → c24 → c23 → c17 → c16 → c22 → c21 → c20 → c9 → c15 → c10 → c11 → c12 → c6 → c5 → c1 → c0 → c4 → c3</p><p>解除 direction:c13 后:c7 → c6 → c12 → c13 → c18 → c17 → c16 → c15 → c10 → c11 → c5 → c1 → c0 → c4 → c3 → c9 → c20 → c21 → c22 → c23 → c24 → c25 → c19 → c14 → c8 → c2</p><p>解除 door:0 后:c7 → c2 → c8 → c14 → c13 → c18 → c19 → c25 → c24 → c23 → c22 → c21 → c20 → c9 → c3 → c4 → c0 → c1 → c5 → c6 → c12 → c17 → c16 → c11 → c10 → c15</p></details></article><article><h2>102 · 第11章 · 区域规划 · 六边 · 出口布局 102</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 361.25418549908454 450" role="img" aria-label="六边 · 出口布局 102"><polygon 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font-weight="700">27</text><text x="155.26492021014087" y="352.14285714285705" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text><text x="205.9892652889437" y="363.4285714285714" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">22</text><text x="205.9892652889437" y="381.4285714285714" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c26</text><text x="256.7136103677465" y="392.71428571428567" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">21</text><text x="256.7136103677465" y="410.71428571428567" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c11 → c5 → c0 → c1 → c6 → c12 → c17 → c23 → c24 → c18 → c13 → c7 → c2 → c8 → c3 → c4 → c9 → c10 → c16 → c22 → c27 → c26 → c21 → c15 → c14 → c19 → c25 → c20</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c20—c21 封闭该邻接</li></ul><p>关键分叉:第 6 步应走 c12,诱惑路线走 c7。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c11 → c5 → c0 → c1 → c6 → c7 → c12 → c17 → c23 → c18 → c24 → c25 → c26 → c27 → c22 → c21 → c16 → c10 → c4 → c3 → c2 → c8 → c9 → c15 → c20 → c19 → c13 → c14</p><p>解除 wall:0 后:c11 → c5 → c0 → c1 → c6 → c12 → c17 → c18 → c13 → c7 → c2 → c8 → c3 → c4 → c9 → c10 → c16 → c22 → c27 → c26 → c25 → c20 → c21 → c15 → c14 → c19 → c24 → c23</p></details></article><article><h2>103 · 第11章 · 区域规划 · 六边 · 出口布局 103</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 103"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 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wall:0 后:c3 → c4 → c9 → c5 → c10 → c14 → c13 → c8 → c12 → c17 → c18 → c19 → c20 → c15 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c16 → c11 → c6 → c7 → c2 → c1 → c0</p><p>解除 door:0 后:c3 → c4 → c5 → c10 → c9 → c14 → c13 → c8 → c12 → c18 → c19 → c20 → c15 → c21 → c27 → c26 → c25 → c24 → c23 → c17 → c22 → c16 → c11 → c6 → c7 → c2 → c1 → c0</p></details></article><article><h2>104 · 第11章 · 区域规划 · 六边 · 出口布局 104</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 104"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 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c1 → c0 → c5</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c3—c8 封闭该邻接</li></ul><p>关键分叉:第 11 步应走 c20,诱惑路线走 c13。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c25 → c24 → c23 → c22 → c16 → c17 → c11 → c12 → c18 → c19 → c13 → c8 → c9 → c14 → c20 → c26 → c27 → c21 → c15 → c10 → c4 → c3 → c2 → c7 → c6 → c1 → c0 → c5</p><p>解除 wall:0 后:c25 → c24 → c23 → c22 → c16 → c17 → c11 → c12 → c18 → c19 → c20 → c26 → c27 → c21 → c15 → c14 → c13 → c9 → c10 → c4 → c3 → c8 → c2 → c7 → c6 → c1 → c0 → c5</p></details></article><article><h2>105 · 第11章 · 区域规划 · 通道 · 奇偶的选择</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 奇偶的选择"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,190 105,190" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" 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c2</p><p>解除 parity:c11 后:c4 → c0 → c1 → c8 → c7 → c11 → c12 → c13 → c10 → c9 → c5 → c6 → c3 → c2</p><p>解除 direction:c10 后:c1 → c0 → c4 → c7 → c11 → c12 → c8 → c9 → c5 → c2 → c3 → c6 → c10 → c13</p></details></article><article><h2>106 · 第11章 · 区域规划 · 拼块 · 出口布局 106</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 出口布局 106"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 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font-weight="700">17</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c24</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">18</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c7 → c3 → c2 → c1 → c0 → c6 → c15 → c20 → c21 → c22 → c17 → c16 → c10 → c11 → c12 → c23 → c24 → c25 → c19 → c18 → c13 → c8 → c4 → c5 → c9 → c14</p></details></div><h3>推理依据</h3><ul><li>c11 必须左右直行</li><li>每步蓝橙交替</li><li>门 c4—c5 通过前按已走格数切换,通过后保持开启;正确解从第23步末端通过</li></ul><p>关键分叉:第 7 步应走 c15,诱惑路线走 c10。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c11 后:c7 → c3 → c2 → c1 → c0 → c6 → c10 → c16 → c15 → c20 → c21 → c22 → c17 → c11 → c12 → c23 → c24 → c25 → c19 → c18 → c13 → c8 → c4 → c5 → c9 → c14</p><p>解除 alternation 后:c7 → c3 → c2 → c1 → c0 → c6 → c10 → c11 → c12 → c17 → c16 → c15 → c20 → c21 → c22 → c23 → c24 → c25 → c19 → c18 → c13 → c8 → c4 → c5 → c9 → c14</p><p>解除 door:0 后:c7 → c3 → c2 → c1 → c0 → c6 → c15 → c20 → c21 → c22 → c17 → c16 → c10 → c11 → c12 → c23 → c24 → c25 → c19 → c14 → c9 → c5 → c4 → c8 → c13 → c18</p></details></article><article><h2>107 · 第11章 · 区域规划 · 六边 · 出口布局 107</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 361.25418549908454 450" role="img" aria-label="六边 · 出口布局 107"><polygon points="87.63246010507044,49.28571428571428 70.72434507880283,78.57142857142856 36.908115026267616,78.57142857142856 20,49.285714285714285 36.908115026267595,20.000000000000004 70.72434507880283,20" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="138.35680518387326,78.57142857142856 121.44869015760565,107.85714285714285 87.63246010507044,107.85714285714285 70.72434507880283,78.57142857142856 87.63246010507042,49.285714285714285 121.44869015760565,49.28571428571428" 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font-size="10" fill="#665c78">c26</text><text x="256.7136103677465" y="392.71428571428567" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">11</text><text x="256.7136103677465" y="410.71428571428567" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c9 → c3 → c4 → c5 → c11 → c10 → c15 → c16 → c17 → c23 → c27 → c22 → c21 → c26 → c20 → c25 → c24 → c18 → c19 → c14 → c13 → c12 → c6 → c0 → c1 → c7 → c2 → c8</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c19—c25 封闭该邻接</li></ul><p>关键分叉:第 5 步应走 c11,诱惑路线走 c10。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c9 → c3 → c4 → c5 → c10 → c11 → c17 → c23 → c27 → c22 → c16 → c15 → c21 → c26 → c25 → c20 → c14 → c19 → c24 → c18 → c12 → c7 → c6 → c0 → c1 → c2 → c8 → c13</p><p>解除 wall:0 后:c9 → c3 → c4 → c5 → c11 → c10 → c15 → c16 → c17 → c23 → c27 → c22 → c21 → c26 → c20 → c14 → c19 → c25 → c24 → c18 → c13 → c12 → c6 → c0 → c1 → c7 → c2 → c8</p></details></article><article><h2>108 · 第11章 · 区域规划 · 拼块 · 交错挑战 108</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 交错挑战 108"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,133.33333333333331 76.66666666666666,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 303.3333333333333,20 303.3333333333333,76.66666666666666 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c12。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c6 后:c24 → c23 → c17 → c12 → c13 → c7 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c16 → c21 → c22 → c27 → c26 → c25 → c20 → c15 → c9 → c8 → c14 → c19 → c18</p><p>解除 wall:0 后:c24 → c23 → c17 → c18 → c13 → c12 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c9 → c15 → c14 → c19 → c20 → c25 → c26 → c27 → c22 → c21 → c16 → c10 → c4 → c5 → c11</p><p>解除 wall:1 后:c24 → c23 → c17 → c18 → c13 → c12 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c16 → c21 → c22 → c27 → c26 → c25 → c20 → c19 → c14 → c8 → c7</p></details></article><article><h2>111 · 第12章 · 区域规划 · 六边 · 出口布局 111</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 111"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 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c21</p></details></article><article><h2>113 · 第12章 · 区域规划 · 拼块 · 出口布局 113</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 出口布局 113"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666 133.33333333333331,133.33333333333331 76.66666666666666,133.33333333333331" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 303.3333333333333,20 303.3333333333333,76.66666666666666 246.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="303.3333333333333,20 360,20 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font-size="16.43333333333333" font-weight="700">23</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25 · 奇</text></svg></figure><p>c5 → c0 → c1 → c6 → c12 → c11 → c10 → c16 → c21 → c17 → c18 → c19 → c13 → c7 → c2 → c3 → c4 → c9 → c8 → c14 → c15 → c20 → c25 → c24 → c23 → c22</p></details></div><h3>推理依据</h3><ul><li>c25 为第23步,要求奇</li><li>c7 必须上下直行</li><li>c24 必须左右直行</li><li>门 c8—c14 通过前按已走格数切换,通过后保持开启;正确解从第19步末端通过</li></ul><p>关键分叉:第 4 步应走 c6,诱惑路线走 c2。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c25 后:c5 → c0 → c1 → c2 → c7 → c13 → c14 → c8 → c3 → c4 → c9 → c15 → c20 → c25 → c24 → c23 → c19 → c18 → c22 → c21 → c17 → c16 → c10 → c11 → c12 → c6</p><p>解除 direction:c7 后:c5 → c0 → c1 → c2 → c3 → c4 → c9 → c8 → c7 → c6 → c12 → c11 → c10 → c16 → c21 → c17 → c18 → c22 → c23 → c24 → c25 → c20 → c15 → c14 → c13 → c19</p><p>解除 direction:c24 后:c5 → c0 → c1 → c6 → c12 → c11 → c10 → c16 → c21 → c17 → c18 → c22 → c23 → c19 → c13 → c7 → c2 → c3 → c4 → c9 → c8 → c14 → c15 → c20 → c25 → c24</p><p>解除 door:0 后:c5 → c0 → c1 → c6 → c12 → c11 → c10 → c16 → c21 → c17 → c18 → c22 → c23 → c24 → c25 → c20 → c15 → c14 → c8 → c9 → c4 → c3 → c2 → c7 → c13 → c19</p></details></article><article><h2>114 · 第12章 · 区域规划 · 六边 · 出口布局 114</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 114"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 114.68544414709862,47.33333333333333" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon 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font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c3 → c2 → c1 → c0 → c6 → c12 → c7 → c8 → c13 → c18 → c19 → c24 → c25 → c26 → c21 → c20 → c14 → c9 → c15 → c16 → c10 → c4 → c5 → c11 → c17 → c23 → c22 → c27 → c28 → c29</p></details></div><h3>推理依据</h3><ul><li>c15 为第19步,要求奇</li><li>墙 c5—c10 封闭该邻接</li></ul><p>关键分叉:第 18 步应走 c9,诱惑路线走 c15。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c15 后:c3 → c2 → c1 → c0 → c6 → c12 → c7 → c8 → c13 → c18 → c19 → c24 → c25 → c26 → c21 → c20 → c14 → c15 → c16 → c10 → c9 → c4 → c5 → c11 → c17 → c23 → c22 → c27 → c28 → c29</p><p>解除 wall:0 后:c3 → c2 → c1 → c0 → c6 → c12 → c7 → c8 → c13 → c18 → c19 → c24 → c25 → c26 → c21 → c20 → c15 → c14 → c9 → c4 → c5 → c10 → c16 → c11 → c17 → c23 → c22 → c27 → c28 → c29</p></details></article><article><h2>115 · 第12章 · 区域规划 · 拼块 · 出口布局 115</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 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c16。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c26 后:c13 → c7 → c1 → c2 → c3 → c9 → c8 → c14 → c15 → c16 → c10 → c4 → c5 → c11 → c17 → c22 → c27 → c26 → c25 → c21 → c20 → c24 → c19 → c23 → c18 → c12 → c6 → c0</p><p>解除 direction:c7 后:c13 → c7 → c8 → c2 → c3 → c9 → c10 → c4 → c5 → c11 → c17 → c16 → c22 → c27 → c26 → c25 → c21 → c15 → c14 → c20 → c24 → c19 → c23 → c18 → c12 → c6 → c0 → c1</p></details></article><article><h2>117 · 第12章 · 区域规划 · 六边 · 出口布局 117</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 117"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 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c13 → c14 → c15 → c16 → c21 → c22 → c27 → c26</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c19—c24 封闭该邻接</li></ul><p>关键分叉:第 10 步应走 c11,诱惑路线走 c7。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c4 → c5 → c10 → c9 → c3 → c2 → c1 → c0 → c6 → c7 → c8 → c12 → c11 → c17 → c23 → c24 → c18 → c13 → c14 → c19 → c25 → c20 → c15 → c16 → c21 → c22 → c26 → c27</p><p>解除 wall:0 后:c4 → c5 → c10 → c9 → c3 → c2 → c1 → c0 → c6 → c11 → c7 → c8 → c12 → c17 → c23 → c18 → c13 → c19 → c24 → c25 → c20 → c14 → c15 → c16 → c21 → c22 → c27 → c26</p></details></article><article><h2>118 · 第12章 · 区域规划 · 六边 · 交错挑战 118</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 442.9297141818125" role="img" aria-label="六边 · 交错挑战 118"><polygon points="91.57894736842105,50.99459339860096 73.6842105263158,81.98918679720192 37.894736842105274,81.98918679720192 20,50.99459339860097 37.894736842105246,20.000000000000004 73.6842105263158,20" fill="#f1eef9" 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→ c22 → c16 → c21 → c20 → c15 → c14 → c8</p><p>解除 wall:0 后:c0 → c1 → c6 → c12 → c18 → c13 → c7 → c2 → c3 → c8 → c9 → c4 → c10 → c5 → c11 → c17 → c23 → c22 → c16 → c21 → c20 → c15 → c14 → c19</p><p>解除 wall:1 后:c0 → c1 → c6 → c12 → c18 → c13 → c7 → c2 → c8 → c3 → c4 → c9 → c10 → c5 → c11 → c17 → c23 → c22 → c16 → c21 → c20 → c15 → c14 → c19</p></details></article><article><h2>119 · 第12章 · 区域规划 · 通道 · 奇偶的交错</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道 · 奇偶的交错"><polygon points="20,20 105,20 105,105 20,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,20 190,20 190,105 105,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 275,20 275,105 190,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,20 360,20 360,105 275,105" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" fill="#f1eef9" 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封闭该邻接</li><li>门 c22—c16 通过前按已走格数切换,通过后保持开启;正确解从第13步末端通过</li></ul><p>关键分叉:第 24 步应走 c8,诱惑路线走 c4。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c8 后:c20 → c21 → c27 → c26 → c25 → c19 → c24 → c23 → c18 → c13 → c12 → c17 → c22 → c16 → c10 → c11 → c7 → c6 → c5 → c0 → c1 → c2 → c3 → c4 → c8 → c9 → c14 → c15</p><p>解除 wall:0 后:c20 → c21 → c27 → c26 → c25 → c19 → c24 → c23 → c18 → c13 → c12 → c17 → c22 → c16 → c11 → c7 → c6 → c10 → c5 → c0 → c1 → c2 → c3 → c8 → c4 → c9 → c14 → c15</p><p>解除 door:0 后:c20 → c21 → c27 → c26 → c25 → c19 → c24 → c23 → c18 → c13 → c12 → c8 → c7 → c11 → c17 → c22 → c16 → c10 → c5 → c0 → c1 → c6 → c2 → c3 → c4 → c9 → c14 → c15</p></details></article><article><h2>121 · 第13章 · 区域规划 · 六边 · 出口布局 121</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 442.9297141818125" role="img" aria-label="六边 · 出口布局 121"><polygon points="91.57894736842105,50.99459339860096 73.6842105263158,81.98918679720192 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y="370.94052738461056" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="324.2105263157895" y="383.9351207832116" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">16</text><text x="324.2105263157895" y="401.9351207832116" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c12 → c18 → c19 → c13 → c7 → c6 → c0 → c1 → c2 → c8 → c3 → c4 → c5 → c11 → c17 → c23 → c22 → c16 → c21 → c20 → c14 → c9 → c15 → c10</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c3—c9 封闭该邻接</li><li>门 c22—c16 通过前按已走格数切换,通过后保持开启;正确解从第17步末端通过</li></ul><p>关键分叉:第 10 步应走 c8,诱惑路线走 c3。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c12 → c18 → c19 → c13 → c7 → c6 → c0 → c1 → c2 → c3 → c8 → c14 → c20 → c21 → c15 → c9 → c4 → c5 → c10 → c11 → c16 → c17 → c22 → c23</p><p>解除 wall:0 后:c12 → c18 → c19 → c13 → c7 → c6 → c0 → c1 → c2 → c8 → c14 → c9 → c3 → c4 → c5 → c11 → c17 → c23 → c22 → c16 → c21 → c20 → c15 → c10</p><p>解除 door:0 后:c12 → c18 → c19 → c13 → c7 → c6 → c0 → c1 → c2 → c8 → c3 → c4 → c5 → c10 → c15 → c9 → c14 → c20 → c21 → c16 → c22 → c23 → c17 → c11</p></details></article><article><h2>122 · 第13章 · 区域规划 · 方格 · 出口布局 122</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 122"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 303.3333333333333,20 303.3333333333333,76.66666666666666 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font-weight="700">24</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c0 → c4 → c5 → c6 → c1 → c2 → c3 → c7 → c8 → c14 → c13 → c12 → c11 → c10 → c9 → c15 → c21 → c22 → c16 → c17 → c18 → c23 → c24 → c25 → c20 → c19</p></details></div><h3>推理依据</h3><ul><li>c4 必须上与右拐角</li><li>c12 必须左右直行</li><li>门 c24—c25 通过前按已走格数切换,通过后保持开启;正确解从第23步末端通过</li></ul><p>关键分叉:第 3 步应走 c5,诱惑路线走 c9。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c4 后:c0 → c4 → c9 → c15 → c21 → c22 → c16 → c10 → c5 → c6 → c1 → c2 → c3 → c7 → c8 → c14 → c13 → c12 → c11 → c17 → c18 → c23 → c24 → c25 → c20 → c19</p><p>解除 direction:c12 后:c0 → c4 → c5 → c10 → c9 → c15 → c21 → c22 → c16 → c17 → c11 → c6 → c1 → c2 → c3 → c7 → c8 → c14 → c13 → c12 → c18 → c23 → c24 → c25 → c20 → c19</p><p>解除 door:0 后:c0 → c4 → c5 → c6 → c1 → c2 → c3 → c7 → c8 → c14 → c13 → c12 → c11 → c10 → c9 → c15 → c21 → c22 → c16 → c17 → c18 → c19 → c20 → 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font-size="16.43333333333333" font-weight="700">17</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c28</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">16</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c9 → c15 → c14 → c8 → c7 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c18 → c12 → c13 → c19 → c20 → c21 → c22 → c16 → c10</p></details></div><h3>推理依据</h3><ul><li>c6 必须上与右拐角</li><li>墙 c8—c9 封闭该邻接</li><li>门 c24—c18 通过前按已走格数切换,通过后保持开启;正确解从第21步末端通过</li></ul><p>关键分叉:第 2 步应走 c15,诱惑路线走 c3。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c6 后:c9 → c3 → c2 → c1 → c0 → c6 → c12 → c13 → c7 → c8 → c14 → c15 → c16 → c10 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c20 → c19 → c25 → c24 → c18</p><p>解除 wall:0 后:c9 → c8 → c7 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c16 → c17 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c18 → c12 → c13 → c19 → c20 → c14 → c15 → c21 → c22</p><p>解除 door:0 后:c9 → c3 → c4 → c5 → c11 → c10 → c16 → c17 → c23 → c22 → c21 → c15 → c14 → c8 → c2 → c1 → c0 → c6 → c7 → c13 → c12 → c18 → c24 → c25 → c19 → c20 → c26 → c27 → c28 → c29</p></details></article><article><h2>124 · 第13章 · 区域规划 · 拼块 · 出口布局 124</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 124"><polygon points="20,20 88,20 88,88 20,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,20 156,20 156,88 88,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,20 224,20 224,88 156,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,20 292,20 292,88 224,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon 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font-size="10" fill="#665c78">c23</text></svg></figure><p>c9 → c5 → c0 → c1 → c6 → c2 → c3 → c4 → c8 → c7 → c12 → c13 → c18 → c23 → c22 → c17 → c16 → c11 → c10 → c15 → c14 → c19 → c20 → c21</p></details></div><h3>推理依据</h3><ul><li>c7 为第10步,要求偶</li><li>c8 必须左与上拐角</li></ul><p>关键分叉:第 5 步应走 c6,诱惑路线走 c2。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c7 后:c9 → c5 → c0 → c1 → c2 → c3 → c4 → c8 → c7 → c12 → c13 → c18 → c23 → c22 → c17 → c16 → c11 → c6 → c10 → c15 → c14 → c19 → c20 → c21</p><p>解除 direction:c8 后:c9 → c5 → c0 → c1 → c6 → c2 → c3 → c4 → c8 → c13 → c18 → c23 → c22 → c21 → c20 → c19 → c14 → c15 → c10 → c11 → c16 → c17 → c12 → c7</p></details></article><article><h2>125 · 第13章 · 区域规划 · 拼块 · 出口布局 125</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 125"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c28</text><text x="331.66666666666663" y="323.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">12</text><text x="331.66666666666663" y="341.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c11 → c6 → c7 → c8 → c12 → c18 → c17 → c16 → c21 → c22 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c19 → c13 → c14 → c20 → c15 → c10 → c9 → c5 → c4 → c0 → c1 → c2 → c3</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c1—c5 封闭该邻接</li><li>墙 c22—c28 封闭该邻接</li></ul><p>关键分叉:第 8 步应走 c16,诱惑路线走 c22。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c11 → c6 → c7 → c8 → c12 → c18 → c17 → c22 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c19 → c13 → c14 → c20 → c21 → c16 → c15 → c10 → c9 → c5 → c4 → c0 → c1 → c2 → c3</p><p>解除 wall:0 后:c11 → c6 → c2 → c3 → c7 → c8 → c12 → c18 → c17 → c16 → c21 → c22 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c19 → c13 → c14 → c20 → c15 → c10 → c9 → c5 → c1 → c0 → c4</p><p>解除 wall:1 后:c11 → c6 → c7 → c8 → c12 → c18 → c23 → c29 → c28 → c22 → c17 → c16 → c21 → c27 → c26 → c25 → c24 → c19 → c13 → c14 → c20 → c15 → c10 → c9 → c5 → c4 → c0 → c1 → c2 → c3</p></details></article><article><h2>126 · 第13章 · 区域规划 · 六边 · 出口布局 126</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 126"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c28</text><text x="288.27542508344607" y="394.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">13</text><text x="288.27542508344607" y="412.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c16 → c17 → c23 → c29 → c28 → c27 → c22 → c21 → c26 → c25 → c24 → c18 → c12 → c7 → c8 → c13 → c19 → c20 → c14 → c15 → c9</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c17—c22 封闭该邻接</li><li>墙 c20—c26 封闭该邻接</li><li>门 c7—c8 通过前按已走格数切换,通过后保持开启;正确解从第23步末端通过</li></ul><p>关键分叉:第 9 步应走 c10,诱惑路线走 c17。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c22 → c27 → c26 → c21 → c20 → c25 → c24 → c19 → c18 → c12 → c7 → c13 → c8 → c14 → c9 → c10 → c15 → c16</p><p>解除 wall:0 后:c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c16 → c21 → c22 → c17 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c18 → c12 → c7 → c8 → c13 → c19 → c20 → c14 → c15 → c9</p><p>解除 wall:1 后:c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c27 → c22 → c21 → c26 → c20 → c19 → c25 → c24 → c18 → c12 → c7 → c8 → c13 → c14 → c15 → c9 → c10 → c16</p><p>解除 door:0 后:c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c17 → c16 → c10 → c9 → c15 → c14 → c20 → c19 → c13 → c8 → c7 → c12 → c18 → c24 → c25 → c26 → c21 → c22 → c27 → c28 → c29 → c23</p></details></article><article><h2>127 · 第13章 · 区域规划 · 六边 · 出口布局 127</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 127"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#ffae55" 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x="288.27542508344607" y="394.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">11</text><text x="288.27542508344607" y="412.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c27 → c22 → c16 → c10 → c9 → c15 → c21 → c20 → c26 → c25 → c24 → c19 → c18 → c12 → c7 → c8 → c14 → c13</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c14—c19 封闭该邻接</li></ul><p>关键分叉:第 13 步应走 c27,诱惑路线走 c22。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c22 → c27 → c26 → c21 → c16 → c10 → c9 → c15 → c14 → c20 → c25 → c24 → c18 → c12 → c7 → c8 → c13 → c19</p><p>解除 wall:0 后:c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c27 → c22 → c16 → c15 → c21 → c20 → c26 → c25 → c24 → c19 → c14 → c13 → c18 → c12 → c7 → c8 → c9 → c10</p></details></article><article><h2>128 · 第13章 · 区域规划 · 六边 · 交错挑战 128</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 442.9297141818125" role="img" aria-label="六边 · 交错挑战 128"><polygon points="91.57894736842105,50.99459339860096 73.6842105263158,81.98918679720192 37.894736842105274,81.98918679720192 20,50.99459339860097 37.894736842105246,20.000000000000004 73.6842105263158,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="145.26315789473685,81.98918679720192 127.36842105263159,112.9837801958029 91.57894736842105,112.9837801958029 73.6842105263158,81.98918679720192 91.57894736842104,50.99459339860097 127.36842105263159,50.99459339860096" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="198.94736842105263,112.9837801958029 181.05263157894737,143.97837359440385 145.26315789473685,143.97837359440385 127.36842105263159,112.9837801958029 145.26315789473682,81.98918679720192 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">2</text><text x="270.5263157894737" y="370.94052738461056" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="324.2105263157895" y="383.9351207832116" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">1</text><text x="324.2105263157895" y="401.9351207832116" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c23 → c22 → c17 → c11 → c5 → c4 → c10 → c16 → c21 → c15 → c20 → c14 → c9 → c3 → c2 → c8 → c13 → c19 → c18 → c12 → c7 → c1 → c0 → c6</p></details></div><h3>推理依据</h3><ul><li>c17 为第3步,要求奇</li><li>墙 c1—c6 封闭该邻接</li><li>墙 c14—c15 封闭该邻接</li><li>门 c20—c14 通过前按已走格数切换,通过后保持开启;正确解从第11步末端通过</li></ul><p>关键分叉:第 2 步应走 c22,诱惑路线走 c17。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c17 后:c23 → c17 → c11 → c5 → c4 → c10 → c16 → c22 → c21 → c15 → c20 → c14 → c9 → c3 → c2 → c8 → c13 → c19 → c18 → c12 → c7 → c1 → c0 → c6</p><p>解除 wall:0 后:c23 → c22 → c17 → c11 → c5 → c4 → c10 → c16 → c21 → c15 → c20 → c14 → c9 → c3 → c2 → c8 → c13 → c19 → c18 → c12 → c7 → c1 → c6 → c0</p><p>解除 wall:1 后:c23 → c22 → c17 → c11 → c5 → c4 → c10 → c16 → c21 → c20 → c15 → c14 → c9 → c3 → c2 → c8 → c13 → c19 → c18 → c12 → c7 → c1 → c0 → c6</p><p>解除 door:0 后:c23 → c22 → c17 → c11 → c5 → c10 → c16 → c15 → c21 → c20 → c14 → c9 → c4 → c3 → c2 → c8 → c13 → c19 → c18 → c12 → c7 → c1 → c0 → c6</p></details></article><article><h2>129 · 第13章 · 区域规划 · 拼块 · 换一种思路 129</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 换一种思路 129"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">9</text><text x="218.33333333333331" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">8</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c26</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">7</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c3 → c4 → c5 → c11 → c17 → c22 → c27 → c26 → c25 → c20 → c21 → c16 → c10 → c9 → c15 → c14 → c8 → c2 → c1 → c7 → c13 → c18 → c19 → c24 → c23 → c12 → c6 → c0</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c0—c1 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c4,诱惑路线走 c2。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c3 → c2 → c1 → c7 → c13 → c14 → c8 → c9 → c15 → c20 → c21 → c16 → c10 → c4 → c5 → c11 → c17 → c22 → c27 → c26 → c25 → c19 → c18 → c24 → c23 → c12 → c6 → c0</p><p>解除 wall:0 后:c3 → c4 → c5 → c11 → c17 → c22 → c27 → c26 → c25 → c20 → c21 → c16 → c10 → c9 → c15 → c14 → c8 → c2 → c1 → c0 → c6 → c7 → c13 → c12 → c23 → c24 → c19 → c18</p></details></article><article><h2>130 · 第13章 · 区域规划 · 方格 · 出口布局 130</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 130"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" 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c2,诱惑路线走 c8。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c8 后:c7 → c8 → c9 → c4 → c3 → c2 → c1 → c6 → c11 → c12 → c13 → c14 → c15 → c21 → c27 → c26 → c20 → c19 → c25 → c24 → c18 → c17 → c23 → c22 → c16 → c10 → c5 → c0</p><p>解除 direction:c17 后:c7 → c2 → c1 → c6 → c11 → c17 → c18 → c12 → c13 → c8 → c3 → c4 → c9 → c14 → c15 → c21 → c27 → c26 → c20 → c19 → c25 → c24 → c23 → c22 → c16 → c10 → c5 → c0</p><p>解除 wall:0 后:c7 → c2 → c1 → c0 → c5 → c6 → c11 → c10 → c16 → c22 → c23 → c17 → c18 → c12 → c13 → c8 → c3 → c4 → c9 → c14 → c15 → c21 → c27 → c26 → c20 → c19 → c25 → c24</p></details></article><article><h2>131 · 第14章 · 区域规划 · 方格 · 出口布局 131</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 131"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon 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y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c21</text><text x="105" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">21</text><text x="105" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="161.66666666666666" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">22</text><text x="161.66666666666666" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text><text x="218.33333333333331" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">5</text><text x="218.33333333333331" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c24</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" 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c0 → c4 → c9 → c15 → c16 → c17 → c23 → c22 → c21</p><p>解除 door:0 后:c6 → c2 → c3 → c7 → c8 → c13 → c14 → c20 → c19 → c25 → c24 → c18 → c12 → c11 → c10 → c5 → c1 → c0 → c4 → c9 → c15 → c16 → c17 → c23 → c22 → c21</p></details></article><article><h2>132 · 第14章 · 区域规划 · 六边 · 出口布局 132</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 132"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 114.68544414709862,47.33333333333333" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="177.8090735784977,102 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x="288.27542508344607" y="412.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c2 → c1 → c0 → c6 → c7 → c8 → c3 → c9 → c4 → c5 → c11 → c10 → c16 → c21 → c22 → c27 → c26 → c25 → c20 → c24 → c19 → c15 → c14 → c13 → c12 → c17 → c23 → c18</p></details></div><h3>推理依据</h3><ul><li>c10 为第12步,要求偶</li><li>墙 c17—c18 封闭该邻接</li><li>门 c11—c10 通过前按已走格数切换,通过后保持开启;正确解从第11步末端通过</li></ul><p>关键分叉:第 8 步应走 c9,诱惑路线走 c4。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c10 后:c2 → c1 → c0 → c6 → c7 → c8 → c3 → c4 → c10 → c5 → c11 → c16 → c21 → c22 → c27 → c26 → c25 → c24 → c20 → c19 → c15 → c9 → c14 → c13 → c12 → c17 → c23 → c18</p><p>解除 wall:0 后:c2 → c1 → c0 → c6 → c7 → c8 → c3 → c9 → c4 → c5 → c11 → c10 → c16 → c21 → c22 → c27 → c26 → c25 → c20 → c24 → c19 → c15 → c14 → c13 → c12 → c17 → c18 → c23</p><p>解除 door:0 后:c2 → c1 → c0 → c6 → c7 → c8 → c3 → c4 → c5 → c10 → c11 → c16 → c21 → c22 → c27 → c26 → c25 → c24 → c20 → c19 → c15 → c9 → c14 → c13 → c12 → c17 → c23 → c18</p></details></article><article><h2>133 · 第14章 · 区域规划 · 六边 · 出口布局 133</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 133"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 114.68544414709862,47.33333333333333" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="177.8090735784977,102 162.02816622064793,129.33333333333331 130.4663515049484,129.33333333333331 114.68544414709862,102 130.46635150494836,74.66666666666666 162.02816622064793,74.66666666666666" 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c9 → c14 → c19 → c25 → c24 → c18 → c13 → c8 → c2 → c1 → c7 → c12 → c6 → c0</p><p>解除 wall:0 后:c20 → c25 → c26 → c21 → c27 → c28 → c29 → c23 → c22 → c17 → c16 → c11 → c5 → c4 → c10 → c15 → c9 → c14 → c19 → c24 → c18 → c13 → c8 → c3 → c2 → c1 → c7 → c12 → c6 → c0</p><p>解除 wall:1 后:c20 → c25 → c26 → c27 → c28 → c29 → c23 → c17 → c22 → c21 → c16 → c11 → c5 → c10 → c4 → c3 → c9 → c15 → c14 → c19 → c24 → c18 → c13 → c8 → c2 → c1 → c7 → c12 → c6 → c0</p></details></article><article><h2>134 · 第14章 · 区域规划 · 方格 · 出口布局 134</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 134"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" 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font-weight="700">17</text><text x="161.66666666666666" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">4</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c24</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">5</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c13 → c18 → c19 → c24 → c25 → c20 → c14 → c8 → c9 → c3 → c2 → c1 → c7 → c6 → c12 → c17 → c23 → c22 → c21 → c15 → c16 → c11 → c10 → c4 → c5 → c0</p></details></div><h3>推理依据</h3><ul><li>c8 为第8步,要求偶</li><li>墙 c16—c17 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c18,诱惑路线走 c12。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c8 后:c13 → c12 → c6 → c7 → c1 → c2 → c3 → c9 → c8 → c14 → c20 → c25 → c24 → c19 → c18 → c17 → c23 → c22 → c21 → c15 → c16 → c11 → c10 → c4 → c5 → c0</p><p>解除 wall:0 后:c13 → c18 → c19 → c24 → c25 → c20 → c14 → c8 → c9 → c3 → c2 → c1 → c7 → c6 → c12 → c11 → c16 → c17 → c23 → c22 → c21 → c15 → c10 → c4 → c5 → c0</p></details></article><article><h2>136 · 第14章 · 区域规划 · 拼块 · 出口布局 136</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 出口布局 136"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666 133.33333333333331,133.33333333333331 76.66666666666666,133.33333333333331" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon 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font-size="10" fill="#665c78">c25</text></svg></figure><p>c15 → c21 → c25 → c24 → c20 → c14 → c8 → c9 → c4 → c3 → c2 → c7 → c6 → c12 → c13 → c19 → c23 → c22 → c18 → c17 → c16 → c10 → c11 → c1 → c5 → c0</p></details></div><h3>推理依据</h3><ul><li>c6 必须右与下拐角</li><li>c19 必须上下直行</li><li>每步蓝橙交替</li></ul><p>关键分叉:第 12 步应走 c7,诱惑路线走 c1。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c6 后:c15 → c21 → c25 → c24 → c20 → c14 → c8 → c9 → c4 → c3 → c2 → c1 → c6 → c7 → c13 → c19 → c23 → c22 → c18 → c12 → c11 → c17 → c16 → c10 → c5 → c0</p><p>解除 direction:c19 后:c15 → c14 → c8 → c9 → c4 → c3 → c2 → c7 → c6 → c12 → c13 → c19 → c20 → c21 → c25 → c24 → c23 → c22 → c18 → c17 → c16 → c10 → c11 → c1 → c5 → c0</p><p>解除 alternation 后:c15 → c21 → c25 → c24 → c20 → c14 → c8 → c9 → c4 → c3 → c2 → c7 → c6 → c12 → c13 → c19 → c23 → c22 → c18 → c17 → c16 → c10 → c11 → c1 → c0 → c5</p></details></article><article><h2>137 · 第14章 · 区域规划 · 拼块 · 出口布局 137</h2><div class="boards"><figure><svg 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c9。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c13 后:c3 → c9 → c8 → c2 → c1 → c0 → c6 → c7 → c13 → c12 → c18 → c19 → c20 → c14 → c15 → c21 → c16 → c10 → c4 → c5 → c11 → c17 → c22 → c27 → c31 → c30 → c26 → c29 → c25 → c24 → c23 → c28</p><p>解除 wall:0 后:c3 → c2 → c1 → c0 → c6 → c7 → c8 → c9 → c10 → c4 → c5 → c11 → c17 → c16 → c21 → c22 → c27 → c31 → c30 → c26 → c29 → c25 → c20 → c15 → c14 → c13 → c12 → c18 → c19 → c24 → c23 → c28</p><p>解除 wall:1 后:c3 → c2 → c1 → c0 → c6 → c7 → c8 → c9 → c15 → c21 → c16 → c10 → c4 → c5 → c11 → c17 → c22 → c27 → c31 → c30 → c26 → c29 → c25 → c20 → c14 → c13 → c12 → c18 → c19 → c24 → c23 → c28</p><p>解除 wall:2 后:c3 → c4 → c5 → c11 → c17 → c22 → c27 → c31 → c30 → c26 → c29 → c25 → c24 → c19 → c20 → c14 → c15 → c21 → c16 → c10 → c9 → c8 → c2 → c1 → c0 → c6 → c7 → c13 → c12 → c18 → c23 → c28</p></details></article><article><h2>138 · 第14章 · 区域规划 · 拼块 · 交错挑战 138</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="161.66666666666666" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">15</text><text x="161.66666666666666" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text><text x="218.33333333333331" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">16</text><text x="218.33333333333331" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c24</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">26</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text></svg></figure><p>c0 → c1 → c2 → c3 → c9 → c8 → c7 → c6 → c12 → c16 → c21 → c22 → c13 → c17 → c23 → c24 → c18 → c19 → c14 → c10 → c4 → c5 → c11 → c15 → c20 → c25</p></details></div><h3>推理依据</h3><ul><li>c13 为第13步,要求奇</li><li>c9 必须左与上拐角</li><li>门 c23—c24 通过前按已走格数切换,通过后保持开启;正确解从第15步末端通过</li></ul><p>关键分叉:第 2 步应走 c1,诱惑路线走 c6。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c13 后:c0 → c6 → c12 → c16 → c21 → c22 → c23 → c24 → c25 → c20 → c19 → c18 → c17 → c13 → c7 → c1 → c2 → c8 → c9 → c3 → c4 → c5 → c11 → c10 → c14 → c15</p><p>解除 direction:c9 后:c0 → c1 → c2 → c8 → c7 → c6 → c12 → c16 → c21 → c22 → c13 → c17 → c23 → c24 → c18 → c19 → c14 → c10 → c9 → c3 → c4 → c5 → c11 → c15 → c20 → c25</p><p>解除 door:0 后:c0 → c1 → c2 → c3 → c9 → c8 → c13 → c7 → c6 → c12 → c16 → c21 → c22 → c23 → c24 → c25 → c20 → c15 → c11 → c5 → c4 → c10 → c14 → c19 → c18 → c17</p></details></article><article><h2>139 · 第14章 · 区域规划 · 拼块 · 换一种思路 139</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 换一种思路 139"><polygon points="20,20 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fill="#665c78">c25</text></svg></figure><p>c21 → c17 → c18 → c19 → c22 → c23 → c14 → c13 → c12 → c11 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c9 → c4 → c5 → c10 → c16 → c15 → c20 → c24 → c25</p></details></div><h3>推理依据</h3><ul><li>c7 为第14步,要求偶</li><li>墙 c8—c13 封闭该邻接</li></ul><p>关键分叉:第 3 步应走 c18,诱惑路线走 c11。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c7 后:c21 → c17 → c11 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c9 → c4 → c5 → c10 → c16 → c15 → c20 → c14 → c13 → c12 → c18 → c19 → c22 → c23 → c24 → c25</p><p>解除 wall:0 后:c21 → c17 → c11 → c12 → c18 → c19 → c22 → c23 → c14 → c13 → c8 → c7 → c6 → c0 → c1 → c2 → c3 → c9 → c4 → c5 → c10 → c16 → c15 → c20 → c24 → c25</p></details></article><article><h2>140 · 第14章 · 区域规划 · 方格 · 出口布局 140</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 140"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" 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font-size="10" fill="#665c78">c28</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">4</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c16 → c17 → c23 → c29 → c28 → c22 → c21 → c15 → c14 → c20 → c19 → c13 → c7 → c8 → c9 → c10 → c11 → c5 → c4 → c3 → c2 → c1 → c0 → c6 → c12 → c18 → c24 → c25 → c26 → c27</p></details></div><h3>推理依据</h3><ul><li>c20 必须左与上拐角</li><li>墙 c9—c15 封闭该邻接</li><li>门 c12—c18 通过前按已走格数切换,通过后保持开启;正确解从第25步末端通过</li></ul><p>关键分叉:第 2 步应走 c17,诱惑路线走 c22。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c20 后:c16 → c22 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c10 → c9 → c3 → c2 → c1 → c0 → c6 → c7 → c8 → c14 → c15 → c21 → c20 → c19 → c13 → c12 → c18 → c24 → c25 → c26 → c27</p><p>解除 wall:0 后:c16 → c17 → c23 → c29 → c28 → c22 → c21 → c15 → c9 → c10 → c11 → c5 → c4 → c3 → c2 → c1 → c0 → c6 → c7 → c8 → c14 → c20 → c19 → c13 → c12 → c18 → c24 → c25 → c26 → c27</p><p>解除 door:0 后:c16 → c22 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c10 → c9 → c3 → c2 → c8 → c7 → c13 → c19 → c20 → c14 → c15 → c21 → c27 → c26 → c25 → c24 → c18 → c12 → c6 → c0 → c1</p></details></article><article><h2>141 · 第15章 · 综合挑战 · 六边 · 出口布局 141</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 304.5622704110109 450" role="img" aria-label="六边 · 出口布局 141"><polygon points="75.6973200865286,44.11764705882353 61.772990064896454,68.23529411764706 33.92433002163216,68.23529411764706 20,44.117647058823536 33.92433002163214,20.000000000000004 61.772990064896454,20" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="117.47031015142505,68.23529411764706 103.54598012979291,92.3529411764706 75.6973200865286,92.3529411764706 61.772990064896454,68.23529411764706 75.69732008652859,44.117647058823536 103.54598012979291,44.11764705882353" 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c30</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c6—c12 封闭该邻接</li><li>门 c6—c7 通过前按已走格数切换,通过后保持开启;正确解从第15步末端通过</li></ul><p>关键分叉:第 3 步应走 c21,诱惑路线走 c15。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c10 → c16 → c15 → c9 → c4 → c3 → c2 → c1 → c0 → c5 → c6 → c11 → c17 → c22 → c18 → c12 → c7 → c8 → c13 → c14 → c19 → c23 → c28 → c24 → c20 → c21 → c25 → c29 → c26 → c27 → c30 → c31</p><p>解除 wall:0 后:c10 → c16 → c21 → c20 → c15 → c14 → c9 → c4 → c8 → c3 → c2 → c1 → c0 → c5 → c11 → c12 → c6 → c7 → c13 → c19 → c18 → c17 → c22 → c23 → c28 → c24 → c25 → c29 → c26 → c27 → c31 → c30</p><p>解除 door:0 后:c10 → c16 → c21 → c20 → c15 → c14 → c9 → c4 → c8 → c3 → c2 → c7 → c6 → c1 → c0 → c5 → c11 → c12 → c13 → c19 → c18 → c17 → c22 → c23 → c28 → c24 → c25 → c29 → c26 → c27 → c31 → c30</p></details></article><article><h2>142 · 第15章 · 综合挑战 · 六边 · 出口布局 142</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" 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font-size="11" font-weight="700">28</text><text x="288.27542508344607" y="412.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c0 → c5 → c11 → c17 → c23 → c24 → c25 → c26 → c21 → c20 → c15 → c14 → c19 → c18 → c12 → c6 → c1 → c7 → c13 → c8 → c2 → c3 → c4 → c9 → c10 → c16 → c22 → c27</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c6—c11 封闭该邻接</li></ul><p>关键分叉:第 7 步应走 c25,诱惑路线走 c18。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c0 → c5 → c11 → c17 → c23 → c24 → c18 → c12 → c6 → c1 → c2 → c7 → c13 → c8 → c3 → c4 → c9 → c10 → c16 → c15 → c14 → c19 → c25 → c20 → c26 → c21 → c22 → c27</p><p>解除 wall:0 后:c0 → c5 → c11 → c6 → c1 → c7 → c12 → c17 → c23 → c18 → c19 → c24 → c25 → c26 → c21 → c20 → c15 → c14 → c13 → c8 → c2 → c3 → c4 → c9 → c10 → c16 → c22 → c27</p></details></article><article><h2>143 · 第15章 · 综合挑战 · 方格 · 出口布局 143</h2><div class="boards"><figure><svg 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c21</p></details></article><article><h2>145 · 第15章 · 综合挑战 · 拼块 · 出口布局 145</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 145"><polygon points="156,20 292,20 292,88 156,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="292,20 360,20 360,88 292,88" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,88 88,88 88,156 20,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="88,88 156,88 156,156 88,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="156,88 224,88 224,156 156,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="224,88 292,88 292,156 224,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="292,88 360,88 360,156 292,156" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,156 156,156 156,224 20,224" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c17 · 奇</text><text x="190" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">12</text><text x="190" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c18</text><text x="258" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">11</text><text x="258" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c19</text></svg></figure><p>c0 → c1 → c6 → c5 → c4 → c8 → c9 → c10 → c15 → c14 → c19 → c18 → c13 → c12 → c17 → c16 → c11 → c7 → c3 → c2</p></details></div><h3>推理依据</h3><ul><li>c17 为第15步,要求奇</li><li>c5 必须左右直行</li><li>墙 c2—c7 封闭该邻接</li></ul><p>关键分叉:第 1 步应走 c0,诱惑路线走 c2。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c17 后:c2 → c3 → c7 → c11 → c16 → c17 → c12 → c13 → c18 → c19 → c14 → c15 → c10 → c9 → c8 → c4 → c5 → c6 → c1 → c0</p><p>解除 direction:c5 后:c0 → c1 → c6 → c5 → c9 → c10 → c15 → c14 → c19 → c18 → c13 → c12 → c17 → c16 → c11 → c7 → c8 → c4 → c3 → c2</p><p>解除 wall:0 后:c0 → c1 → c6 → c5 → c4 → c3 → c2 → c7 → c11 → c16 → c17 → c12 → c13 → c8 → c9 → c10 → c15 → c14 → c19 → c18</p></details></article><article><h2>146 · 第15章 · 综合挑战 · 拼块 · 出口布局 146</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 146"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 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font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">7</text><text x="161.66666666666666" y="341.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c26</text><text x="218.33333333333331" y="323.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">6</text><text x="218.33333333333331" y="341.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c13 → c18 → c23 → c17 → c22 → c27 → c26 → c25 → c24 → c19 → c20 → c21 → c16 → c15 → c14 → c10 → c11 → c6 → c5 → c0 → c1 → c2 → c3 → c7 → c12 → c8 → c9 → c4</p></details></div><h3>推理依据</h3><ul><li>c14 为第15步,要求奇</li><li>墙 c20—c25 封闭该邻接</li></ul><p>关键分叉:第 5 步应走 c22,诱惑路线走 c12。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c14 后:c13 → c18 → c23 → c17 → c12 → c16 → c15 → c20 → c21 → c22 → c27 → c26 → c25 → c24 → c19 → c14 → c10 → c11 → c6 → c5 → c0 → c1 → c2 → c3 → c7 → c8 → c9 → c4</p><p>解除 wall:0 后:c13 → c18 → c23 → c17 → c22 → c27 → c26 → c21 → c16 → c15 → c20 → c25 → c24 → c19 → c14 → c10 → c11 → c6 → c5 → c0 → c1 → c2 → c3 → c7 → c12 → c8 → c9 → c4</p></details></article><article><h2>147 · 第15章 · 综合挑战 · 六边 · 出口布局 147</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 361.25418549908466 450" role="img" aria-label="六边 · 出口布局 147"><polygon points="138.3568051838733,49.285714285714285 121.44869015760568,78.57142857142857 87.63246010507045,78.57142857142857 70.72434507880284,49.28571428571429 87.63246010507044,20.000000000000004 121.44869015760568,20" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="189.08115026267612,78.57142857142857 172.1730352364085,107.85714285714286 138.3568051838733,107.85714285714286 121.44869015760568,78.57142857142858 138.3568051838733,49.28571428571429 172.1730352364085,49.285714285714285" fill="#64acf3" stroke="#aaa1c7" 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c6。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c1 → c0 → c5 → c6 → c11 → c17 → c12 → c7 → c2 → c3 → c4 → c10 → c9 → c8 → c13 → c14 → c20 → c15 → c16 → c21 → c22 → c27 → c26 → c25 → c24 → c19 → c18 → c23</p><p>解除 wall:0 后:c1 → c0 → c5 → c6 → c12 → c11 → c17 → c18 → c23 → c24 → c25 → c21 → c26 → c27 → c22 → c16 → c10 → c15 → c20 → c14 → c19 → c13 → c7 → c8 → c2 → c3 → c9 → c4</p></details></article><article><h2>148 · 第15章 · 综合挑战 · 拼块 · 交错挑战 148</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 交错挑战 148"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c28</text><text x="331.66666666666663" y="323.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">13</text><text x="331.66666666666663" y="341.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c0 → c1 → c6 → c7 → c2 → c3 → c4 → c8 → c9 → c14 → c18 → c23 → c29 → c28 → c27 → c21 → c22 → c17 → c13 → c12 → c16 → c26 → c25 → c24 → c19 → c20 → c15 → c11 → c10 → c5</p></details></div><h3>推理依据</h3><ul><li>c1 必须下与左拐角</li><li>c27 必须上与右拐角</li><li>每步蓝橙交替</li><li>门 c29—c28 通过前按已走格数切换,通过后保持开启;正确解从第13步末端通过</li></ul><p>关键分叉:第 3 步应走 c6,诱惑路线走 c2。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c1 后:c0 → c1 → c2 → c3 → c4 → c8 → c9 → c14 → c18 → c23 → c29 → c28 → c27 → c21 → c22 → c17 → c13 → c12 → c16 → c26 → c25 → c24 → c19 → c20 → c15 → c11 → c10 → c5 → c6 → c7</p><p>解除 direction:c27 后:c0 → c1 → c6 → c7 → c2 → c3 → c4 → c8 → c9 → c14 → c13 → c12 → c16 → c17 → c18 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c25 → c24 → c19 → c20 → c15 → c11 → c10 → c5</p><p>解除 alternation 后:c0 → c1 → c6 → c5 → c10 → c11 → c15 → c20 → c19 → c24 → c25 → c26 → c16 → c12 → c7 → c2 → c3 → c4 → c8 → c9 → c14 → c13 → c17 → c18 → c23 → c22 → c21 → c27 → c28 → c29</p><p>解除 door:0 后:c0 → c1 → c6 → c5 → c10 → c11 → c15 → c20 → c19 → c24 → c25 → c26 → c16 → c12 → c13 → c17 → c22 → c21 → c27 → c28 → c29 → c23 → c18 → c14 → c9 → c8 → c4 → c3 → c2 → c7</p></details></article><article><h2>149 · 第15章 · 综合挑战 · 拼块 · 换一种思路 149</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 换一种思路 149"><polygon points="76.66666666666666,20 190,20 190,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 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c20</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c27—c28 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c17,诱惑路线走 c15。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c16 → c15 → c20 → c21 → c27 → c26 → c25 → c24 → c19 → c13 → c14 → c10 → c9 → c0 → c5 → c1 → c2 → c6 → c7 → c3 → c4 → c8 → c12 → c11 → c17 → c18 → c23 → c22 → c28 → c29</p><p>解除 wall:0 后:c16 → c21 → c22 → c17 → c11 → c7 → c3 → c4 → c8 → c12 → c18 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c19 → c13 → c9 → c0 → c1 → c2 → c6 → c5 → c10 → c14 → c15 → c20</p></details></article><article><h2>151 · 第16章 · 综合挑战 · 方格 · 出口布局 151</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 151"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 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font-size="10" fill="#665c78">c29</text></svg></figure><p>c3 → c9 → c15 → c16 → c10 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c20 → c14 → c8 → c2 → c1 → c0 → c6 → c12 → c18 → c24 → c25 → c19 → c13 → c7</p></details></div><h3>推理依据</h3><ul><li>c8 必须上下直行</li><li>墙 c6—c7 封闭该邻接</li><li>门 c25—c19 通过前按已走格数切换,通过后保持开启;正确解从第27步末端通过</li></ul><p>关键分叉:第 2 步应走 c9,诱惑路线走 c2。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c8 后:c3 → c2 → c8 → c9 → c10 → c4 → c5 → c11 → c17 → c16 → c22 → c23 → c29 → c28 → c27 → c26 → c20 → c21 → c15 → c14 → c13 → c7 → c1 → c0 → c6 → c12 → c18 → c24 → c25 → c19</p><p>解除 wall:0 后:c3 → c9 → c15 → c16 → c10 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c20 → c14 → c8 → c2 → c1 → c0 → c6 → c7 → c13 → c12 → c18 → c24 → c25 → c19</p><p>解除 door:0 后:c3 → c9 → c15 → c16 → c10 → c4 → c5 → c11 → c17 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c20 → c14 → c8 → c2 → c1 → c7 → c13 → c19 → c25 → c24 → c18 → c12 → c6 → c0</p></details></article><article><h2>152 · 第16章 · 综合挑战 · 拼块 · 出口布局 152</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 152"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 303.3333333333333,20 303.3333333333333,76.66666666666666 246.66666666666666,76.66666666666666" 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font-size="10" fill="#665c78">c31</text></svg></figure><p>c3 → c2 → c1 → c0 → c6 → c7 → c8 → c9 → c15 → c20 → c19 → c14 → c13 → c12 → c17 → c18 → c22 → c27 → c28 → c29 → c23 → c24 → c30 → c31 → c26 → c25 → c21 → c16 → c10 → c11 → c5 → c4</p></details></div><h3>推理依据</h3><ul><li>c11 必须左与上拐角</li><li>c21 必须上下直行</li><li>每步蓝橙交替</li><li>墙 c9—c10 封闭该邻接</li></ul><p>关键分叉:第 30 步应走 c11,诱惑路线走 c4。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c11 后:c3 → c2 → c1 → c0 → c6 → c7 → c8 → c9 → c15 → c20 → c19 → c14 → c13 → c12 → c17 → c18 → c22 → c27 → c28 → c29 → c23 → c24 → c30 → c31 → c26 → c25 → c21 → c16 → c10 → c4 → c5 → c11</p><p>解除 direction:c21 后:c3 → c2 → c1 → c0 → c6 → c7 → c13 → c12 → c17 → c18 → c22 → c27 → c28 → c29 → c23 → c24 → c30 → c31 → c26 → c25 → c21 → c20 → c19 → c14 → c8 → c9 → c15 → c16 → c10 → c11 → c5 → c4</p><p>解除 alternation 后:c3 → c2 → c1 → c0 → c6 → c7 → c8 → c9 → c15 → c14 → c13 → c12 → c17 → c18 → c19 → c20 → c24 → c23 → c22 → c27 → c28 → c29 → c30 → c31 → c26 → c25 → c21 → c16 → c10 → c11 → c5 → c4</p><p>解除 wall:0 后:c3 → c2 → c1 → c0 → c6 → c7 → c13 → c12 → c17 → c18 → c22 → c27 → c28 → c29 → c23 → c24 → c30 → c31 → c26 → c25 → c21 → c16 → c15 → c20 → c19 → c14 → c8 → c9 → c10 → c11 → c5 → c4</p></details></article><article><h2>153 · 第16章 · 综合挑战 · 六边 · 出口布局 153</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 321.09741231169903 450" role="img" aria-label="六边 · 出口布局 153"><polygon points="79.17840259193665,45.625 64.38380194395248,71.25 34.79460064798417,71.25 20,45.625 34.79460064798415,20.000000000000004 64.38380194395248,20" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="123.56220453588912,71.25 108.76760388790495,96.875 79.17840259193665,96.875 64.38380194395248,71.25 79.17840259193662,45.625 108.76760388790495,45.625" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="167.9460064798416,96.875 153.15140583185743,122.49999999999999 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c11,诱惑路线走 c6。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c2 → c1 → c0 → c5 → c6 → c11 → c17 → c23 → c18 → c12 → c7 → c13 → c8 → c3 → c4 → c9 → c14 → c20 → c19 → c24 → c28 → c29 → c30 → c31 → c27 → c22 → c16 → c10 → c15 → c21 → c26 → c25</p><p>解除 wall:0 后:c2 → c1 → c0 → c5 → c11 → c6 → c12 → c17 → c23 → c18 → c13 → c14 → c9 → c15 → c21 → c26 → c20 → c25 → c19 → c24 → c28 → c29 → c30 → c31 → c27 → c22 → c16 → c10 → c4 → c3 → c8 → c7</p><p>解除 door:0 后:c2 → c1 → c0 → c5 → c11 → c6 → c12 → c17 → c23 → c18 → c13 → c7 → c8 → c3 → c4 → c10 → c9 → c14 → c19 → c24 → c28 → c25 → c20 → c26 → c21 → c15 → c16 → c22 → c27 → c31 → c30 → c29</p></details></article><article><h2>154 · 第16章 · 综合挑战 · 拼块 · 出口布局 154</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 154"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" 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c7。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c12 后:c25 → c26 → c31 → c30 → c29 → c24 → c23 → c18 → c19 → c20 → c21 → c16 → c15 → c14 → c13 → c7 → c8 → c9 → c10 → c4 → c3 → c2 → c1 → c0 → c5 → c6 → c12 → c11 → c17 → c22 → c28 → c27</p><p>解除 wall:0 后:c25 → c26 → c31 → c30 → c29 → c24 → c23 → c18 → c19 → c14 → c13 → c12 → c6 → c7 → c8 → c9 → c15 → c20 → c21 → c16 → c10 → c4 → c3 → c2 → c1 → c0 → c5 → c11 → c17 → c22 → c28 → c27</p></details></article><article><h2>155 · 第16章 · 综合挑战 · 六边 · 出口布局 155</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 304.5622704110109 450" role="img" aria-label="六边 · 出口布局 155"><polygon points="75.6973200865286,44.11764705882353 61.772990064896454,68.23529411764706 33.92433002163216,68.23529411764706 20,44.117647058823536 33.92433002163214,20.000000000000004 61.772990064896454,20" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="117.47031015142505,68.23529411764706 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c31</text></svg></figure><p>c0 → c1 → c5 → c6 → c11 → c16 → c22 → c23 → c17 → c18 → c24 → c28 → c29 → c25 → c19 → c14 → c9 → c8 → c13 → c12 → c7 → c2 → c3 → c4 → c10 → c15 → c20 → c21 → c27 → c26 → c30 → c31</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c12—c17 封闭该邻接</li><li>门 c9—c8 通过前按已走格数切换,通过后保持开启;正确解从第17步末端通过</li></ul><p>关键分叉:第 6 步应走 c16,诱惑路线走 c12。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c0 → c1 → c5 → c6 → c11 → c12 → c16 → c22 → c17 → c18 → c23 → c24 → c28 → c29 → c25 → c19 → c14 → c13 → c7 → c2 → c8 → c3 → c9 → c4 → c10 → c15 → c20 → c21 → c27 → c26 → c30 → c31</p><p>解除 wall:0 后:c0 → c1 → c5 → c6 → c7 → c2 → c3 → c8 → c13 → c18 → c17 → c12 → c11 → c16 → c22 → c23 → c24 → c28 → c29 → c25 → c19 → c14 → c9 → c4 → c10 → c15 → c20 → c21 → c27 → c26 → c30 → c31</p><p>解除 door:0 后:c0 → c1 → c5 → c6 → c11 → c16 → c22 → c23 → c17 → c18 → c24 → c28 → c29 → c25 → c19 → c14 → c13 → c12 → c7 → c2 → c3 → c8 → c9 → c4 → c10 → c15 → c20 → c21 → c27 → c26 → c30 → c31</p></details></article><article><h2>156 · 第16章 · 综合挑战 · 六边 · 出口布局 156</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 361.25418549908454 450" role="img" aria-label="六边 · 出口布局 156"><polygon points="87.63246010507044,49.28571428571428 70.72434507880283,78.57142857142856 36.908115026267616,78.57142857142856 20,49.285714285714285 36.908115026267595,20.000000000000004 70.72434507880283,20" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="138.35680518387326,78.57142857142856 121.44869015760565,107.85714285714285 87.63246010507044,107.85714285714285 70.72434507880283,78.57142857142856 87.63246010507042,49.285714285714285 121.44869015760565,49.28571428571428" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="189.0811502626761,107.85714285714285 172.17303523640848,137.1428571428571 138.35680518387326,137.1428571428571 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c1 → c6 → c7 → c12 → c18 → c24 → c19 → c13 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c14 → c20 → c25 → c26 → c27 → c23 → c17 → c16 → c21 → c22</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c22—c27 封闭该邻接</li></ul><p>关键分叉:第 4 步应走 c7,诱惑路线走 c12。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c0 → c1 → c6 → c12 → c7 → c2 → c3 → c8 → c13 → c18 → c24 → c19 → c14 → c9 → c4 → c10 → c5 → c11 → c17 → c23 → c27 → c26 → c25 → c20 → c15 → c16 → c21 → c22</p><p>解除 wall:0 后:c0 → c1 → c6 → c7 → c12 → c18 → c24 → c19 → c13 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c14 → c20 → c25 → c26 → c27 → c22 → c21 → c16 → c17 → c23</p></details></article><article><h2>157 · 第16章 · 综合挑战 · 拼块 · 出口布局 157</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 出口布局 157"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" 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封闭该邻接</li><li>墙 c11—c17 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c16,诱惑路线走 c22。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c19 后:c17 → c22 → c27 → c26 → c25 → c24 → c23 → c19 → c18 → c12 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c8 → c7 → c13 → c14 → c20 → c21 → c16 → c15</p><p>解除 wall:0 后:c17 → c16 → c10 → c11 → c5 → c4 → c3 → c9 → c15 → c14 → c13 → c7 → c8 → c2 → c1 → c0 → c6 → c12 → c18 → c23 → c19 → c20 → c24 → c25 → c26 → c21 → c22 → c27</p><p>解除 wall:1 后:c17 → c11 → c5 → c4 → c10 → c16 → c15 → c14 → c13 → c7 → c8 → c9 → c3 → c2 → c1 → c0 → c6 → c12 → c18 → c23 → c19 → c20 → c24 → c25 → c26 → c21 → c22 → c27</p></details></article><article><h2>158 · 第16章 · 综合挑战 · 拼块 · 交错挑战 158</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 交错挑战 158"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" 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c16 → c12 → c13 → c8 → c7 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c14 → c15 → c21 → c27 → c26 → c25 → c19 → c20</p><p>解除 direction:c18 后:c17 → c23 → c22 → c16 → c12 → c6 → c0 → c1 → c7 → c13 → c8 → c2 → c3 → c9 → c10 → c4 → c5 → c11 → c15 → c14 → c19 → c20 → c21 → c27 → c26 → c25 → c24 → c18</p><p>解除 door:0 后:c17 → c18 → c24 → c23 → c22 → c16 → c12 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c8 → c7 → c13 → c14 → c15 → c21 → c27 → c26 → c25 → c19 → c20</p></details></article><article><h2>159 · 第16章 · 综合挑战 · 拼块 · 换一种思路 159</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 换一种思路 159"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#64acf3" 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→ c29 → c28 → c23 → c17 → c18 → c19 → c20 → c14 → c13 → c12 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c9 → c10 → c4 → c5 → c11 → c16 → c15 → c21 → c22 → c27 → c26</p><p>解除 alternation 后:c31 → c30 → c25 → c19 → c20 → c14 → c13 → c18 → c24 → c29 → c28 → c23 → c17 → c12 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c4 → c5 → c11 → c16 → c22 → c27 → c26 → c21 → c15 → c10 → c9</p><p>解除 door:0 后:c31 → c30 → c25 → c24 → c29 → c28 → c23 → c17 → c18 → c19 → c20 → c14 → c13 → c12 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c9 → c10 → c15 → c21 → c26 → c27 → c22 → c16 → c11 → c5 → c4</p></details></article><article><h2>160 · 第16章 · 综合挑战 · 拼块 · 出口布局 160</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 160"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 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c13 → c7 → c8</p></details></div><h3>推理依据</h3><ul><li>c10 为第13步,要求奇</li><li>墙 c8—c13 封闭该邻接</li></ul><p>关键分叉:第 12 步应走 c9,诱惑路线走 c15。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c10 后:c21 → c20 → c26 → c27 → c28 → c29 → c23 → c22 → c17 → c18 → c14 → c15 → c24 → c30 → c31 → c25 → c19 → c16 → c11 → c5 → c4 → c10 → c9 → c3 → c2 → c1 → c0 → c6 → c12 → c13 → c7 → c8</p><p>解除 wall:0 后:c21 → c20 → c26 → c27 → c28 → c29 → c23 → c22 → c17 → c18 → c14 → c9 → c10 → c15 → c24 → c30 → c31 → c25 → c19 → c16 → c11 → c5 → c4 → c3 → c2 → c1 → c0 → c6 → c12 → c13 → c8 → c7</p></details></article><article><h2>161 · 第17章 · 综合挑战 · 方格 · 出口布局 161</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 161"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 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font-weight="700">20</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c28</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">19</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c13 → c7 → c6 → c0 → c1 → c2 → c8 → c14 → c15 → c9 → c3 → c4 → c5 → c11 → c10 → c16 → c17 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c20 → c19 → c25 → c24 → c18 → c12</p></details></div><h3>推理依据</h3><ul><li>c7 必须下与左拐角</li><li>门 c10—c16 通过前按已走格数切换,通过后保持开启;正确解从第15步末端通过</li></ul><p>关键分叉:第 2 步应走 c7,诱惑路线走 c12。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c7 后:c13 → c12 → c6 → c0 → c1 → c7 → c8 → c14 → c15 → c9 → c10 → c16 → c22 → c21 → c20 → c19 → c18 → c24 → c25 → c26 → c27 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c3 → c2</p><p>解除 door:0 后:c13 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font-weight="700">27</text><text x="193.58998093634747" y="358" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text><text x="240.93270300989678" y="367.33333333333337" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">28</text><text x="240.93270300989678" y="385.33333333333337" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c28</text><text x="288.27542508344607" y="394.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">30</text><text x="288.27542508344607" y="412.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c1 → c0 → c6 → c7 → c12 → c18 → c24 → c25 → c19 → c13 → c14 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c20 → c26 → c21 → c16 → c17 → c22 → c27 → c28 → c23 → c29</p></details></div><h3>推理依据</h3><ul><li>c24 为第7步,要求奇</li><li>墙 c10—c15 封闭该邻接</li><li>墙 c28—c29 封闭该邻接</li></ul><p>关键分叉:第 4 步应走 c7,诱惑路线走 c12。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c24 后:c1 → c0 → c6 → c12 → c18 → c24 → c25 → c19 → c14 → c13 → c7 → c2 → c8 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c20 → c26 → c21 → c16 → c17 → c22 → c27 → c28 → c23 → c29</p><p>解除 wall:0 后:c1 → c0 → c6 → c7 → c12 → c18 → c24 → c25 → c19 → c13 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c15 → c9 → c14 → c20 → c26 → c21 → c16 → c17 → c22 → c27 → c28 → c23 → c29</p><p>解除 wall:1 后:c1 → c0 → c6 → c7 → c12 → c18 → c24 → c25 → c19 → c13 → c14 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c20 → c26 → c21 → c16 → c17 → c22 → c27 → c28 → c29 → c23</p></details></article><article><h2>163 · 第17章 · 综合挑战 · 拼块 · 出口布局 163</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 331.42857142857144" role="img" aria-label="拼块 · 出口布局 163"><polygon points="20,20 68.57142857142857,20 68.57142857142857,68.57142857142857 20,68.57142857142857" 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c22。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c21 → c22 → c29 → c28 → c35 → c34 → c27 → c20 → c19 → c26 → c33 → c32 → c25 → c24 → c31 → c30 → c23 → c16 → c17 → c18 → c11 → c12 → c13 → c14 → c15 → c8 → c7 → c6 → c5 → c2 → c1 → c0 → c3 → c9 → c10 → c4</p><p>解除 wall:0 后:c21 → c28 → c35 → c34 → c27 → c20 → c19 → c12 → c11 → c18 → c25 → c26 → c33 → c32 → c31 → c30 → c23 → c24 → c17 → c16 → c9 → c10 → c4 → c3 → c0 → c1 → c2 → c5 → c6 → c7 → c13 → c14 → c8 → c15 → c22 → c29</p><p>解除 wall:1 后:c21 → c14 → c13 → c20 → c19 → c18 → c25 → c26 → c27 → c28 → c35 → c34 → c33 → c32 → c31 → c30 → c23 → c24 → c17 → c16 → c9 → c3 → c0 → c1 → c2 → c5 → c4 → c10 → c11 → c12 → c6 → c7 → c8 → c15 → c22 → c29</p></details></article><article><h2>164 · 第17章 · 综合挑战 · 拼块 · 出口布局 164</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 164"><polygon points="20,20 76.66666666666666,20 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c3 → c8 → c7 → c6 → c12 → c18 → c23</p></details></div><h3>推理依据</h3><ul><li>c15 必须左右直行</li><li>每步蓝橙交替</li><li>墙 c18—c19 封闭该邻接</li></ul><p>关键分叉:第 11 步应走 c25,诱惑路线走 c20。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c15 后:c2 → c1 → c0 → c5 → c11 → c17 → c27 → c28 → c29 → c24 → c20 → c19 → c13 → c14 → c15 → c21 → c25 → c30 → c31 → c26 → c22 → c16 → c10 → c9 → c4 → c3 → c8 → c7 → c6 → c12 → c18 → c23</p><p>解除 alternation 后:c2 → c1 → c6 → c7 → c8 → c3 → c4 → c9 → c10 → c16 → c15 → c14 → c13 → c19 → c20 → c21 → c22 → c26 → c31 → c30 → c25 → c24 → c29 → c28 → c27 → c17 → c23 → c18 → c12 → c11 → c5 → c0</p><p>解除 wall:0 后:c2 → c1 → c0 → c5 → c6 → c7 → c8 → c3 → c4 → c9 → c10 → c16 → c15 → c14 → c20 → c21 → c22 → c26 → c31 → c30 → c25 → c24 → c29 → c28 → c27 → c17 → c11 → c12 → c13 → c19 → c18 → c23</p></details></article><article><h2>165 · 第17章 · 综合挑战 · 拼块 · 出口布局 165</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" 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font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">15</text><text x="275" y="341.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c3 → c9 → c14 → c20 → c25 → c26 → c21 → c15 → c16 → c17 → c23 → c22 → c27 → c28 → c29 → c24 → c19 → c18 → c13 → c12 → c11 → c10 → c4 → c0 → c1 → c5 → c6 → c7 → c8 → c2</p></details></div><h3>推理依据</h3><ul><li>c17 为第10步,要求偶</li><li>c22 必须右与下拐角</li></ul><p>关键分叉:第 4 步应走 c20,诱惑路线走 c15。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c17 后:c3 → c9 → c14 → c15 → c21 → c20 → c25 → c26 → c27 → c22 → c23 → c28 → c29 → c24 → c19 → c18 → c13 → c12 → c17 → c16 → c11 → c10 → c4 → c0 → c1 → c5 → c6 → c7 → c8 → c2</p><p>解除 direction:c22 后:c3 → c9 → c14 → c20 → c25 → c26 → c27 → c22 → c21 → c15 → c16 → c17 → c23 → c28 → c29 → c24 → c19 → c18 → c13 → c12 → c11 → c10 → c4 → c0 → c1 → c5 → c6 → c7 → c8 → c2</p></details></article><article><h2>166 · 第17章 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c22 → c16 → c11</p></details></div><h3>推理依据</h3><ul><li>c9 必须上下直行</li><li>c25 必须左右直行</li><li>门 c27—c21 通过前按已走格数切换,通过后保持开启;正确解从第5步末端通过</li></ul><p>关键分叉:第 8 步应走 c10,诱惑路线走 c14。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c9 后:c18 → c24 → c25 → c26 → c27 → c21 → c15 → c14 → c20 → c19 → c13 → c8 → c9 → c10 → c5 → c4 → c3 → c2 → c1 → c0 → c6 → c7 → c12 → c17 → c23 → c22 → c16 → c11</p><p>解除 direction:c25 后:c18 → c24 → c25 → c19 → c20 → c26 → c27 → c21 → c15 → c10 → c5 → c4 → c9 → c14 → c13 → c8 → c3 → c2 → c1 → c0 → c6 → c7 → c12 → c17 → c23 → c22 → c16 → c11</p><p>解除 door:0 后:c18 → c17 → c12 → c7 → c6 → c0 → c1 → c2 → c3 → c8 → c13 → c19 → c20 → c14 → c9 → c4 → c5 → c10 → c15 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c16 → c11</p></details></article><article><h2>167 · 第17章 · 综合挑战 · 方格 · 出口布局 167</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 167"><polygon points="20,20 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y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c24 · ┘</text><text x="218.33333333333331" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">25</text><text x="218.33333333333331" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c25</text><text x="275" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">26</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c26</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">27</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c17 → c12 → c6 → c0 → c1 → c7 → c13 → c18 → c23 → c24 → c19 → c14 → c15 → c9 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c16 → c21 → c20 → c25 → c26 → c27 → c22</p></details></div><h3>推理依据</h3><ul><li>c24 必须左与上拐角</li><li>墙 c12—c13 封闭该邻接</li></ul><p>关键分叉:第 6 步应走 c7,诱惑路线走 c2。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c24 后:c17 → c12 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c16 → c15 → c9 → c8 → c7 → c13 → c14 → c19 → c18 → c23 → c24 → c25 → c20 → c21 → c22 → c27 → c26</p><p>解除 wall:0 后:c17 → c12 → c13 → c7 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c8 → c14 → c15 → c16 → c21 → c22 → c27 → c26 → c25 → c20 → c19 → c24 → c23 → c18</p></details></article><article><h2>168 · 第17章 · 综合挑战 · 拼块 · 交错挑战 168</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 交错挑战 168"><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon 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c13 → c19 → c20</p></details></div><h3>推理依据</h3><ul><li>c4 为第5步,要求奇</li><li>墙 c18—c24 封闭该邻接</li></ul><p>关键分叉:第 3 步应走 c2,诱惑路线走 c7。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c4 后:c0 → c1 → c7 → c18 → c17 → c12 → c6 → c5 → c11 → c16 → c22 → c23 → c24 → c25 → c26 → c27 → c21 → c15 → c10 → c4 → c3 → c2 → c8 → c9 → c14 → c13 → c19 → c20</p><p>解除 wall:0 后:c0 → c1 → c2 → c3 → c4 → c10 → c15 → c21 → c27 → c26 → c25 → c24 → c18 → c17 → c23 → c22 → c16 → c11 → c5 → c6 → c12 → c7 → c8 → c9 → c14 → c13 → c19 → c20</p></details></article><article><h2>169 · 第17章 · 综合挑战 · 六边 · 换一种思路 169</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 321.0974123116991 450" role="img" aria-label="六边 · 换一种思路 169"><polygon points="123.56220453588912,45.625 108.76760388790497,71.25 79.17840259193665,71.25 64.38380194395248,45.625 79.17840259193663,20.000000000000004 108.76760388790497,20" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon 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x="271.50821101573075" y="414.375" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c31</text></svg></figure><p>c5 → c0 → c1 → c2 → c3 → c4 → c8 → c9 → c14 → c15 → c20 → c19 → c25 → c26 → c31 → c30 → c29 → c24 → c23 → c18 → c13 → c12 → c7 → c6 → c11 → c10 → c16 → c17 → c21 → c22 → c27 → c28</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c1—c6 封闭该邻接</li><li>门 c21—c22 通过前按已走格数切换,通过后保持开启;正确解从第29步末端通过</li></ul><p>关键分叉:第 10 步应走 c15,诱惑路线走 c13。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c5 → c0 → c1 → c2 → c3 → c4 → c8 → c9 → c14 → c13 → c12 → c7 → c6 → c10 → c11 → c16 → c17 → c18 → c22 → c21 → c27 → c28 → c23 → c24 → c29 → c30 → c31 → c26 → c25 → c19 → c15 → c20</p><p>解除 wall:0 后:c5 → c0 → c1 → c6 → c7 → c2 → c3 → c4 → c8 → c9 → c14 → c15 → c20 → c19 → c25 → c26 → c31 → c30 → c29 → c24 → c23 → c18 → c13 → c12 → c11 → c10 → c16 → c17 → c21 → c22 → c27 → c28</p><p>解除 door:0 后:c5 → c0 → c1 → c2 → c3 → c4 → c8 → c9 → c14 → c15 → c20 → c19 → c25 → c26 → c31 → c30 → c29 → c24 → c23 → c28 → c27 → c22 → c21 → c17 → c16 → c10 → c11 → c6 → c7 → c12 → c13 → c18</p></details></article><article><h2>170 · 第17章 · 综合挑战 · 方格 · 出口布局 170</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 170"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon 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c13 → c14 → c15 → c16 → c10 → c9 → c3 → c4 → c5 → c11 → c17 → c23 → c25 → c24 → c22 → c21 → c20 → c19 → c18</p></details></div><h3>推理依据</h3><ul><li>c8 必须左与上拐角</li><li>墙 c10—c11 封闭该邻接</li><li>门 c11—c17 通过前按已走格数切换,通过后保持开启;正确解从第17步末端通过</li></ul><p>关键分叉:第 4 步应走 c8,诱惑路线走 c3。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c8 后:c0 → c1 → c2 → c3 → c9 → c8 → c7 → c6 → c12 → c13 → c14 → c15 → c16 → c10 → c4 → c5 → c11 → c17 → c23 → c25 → c24 → c22 → c21 → c20 → c19 → c18</p><p>解除 wall:0 后:c0 → c1 → c2 → c8 → c7 → c6 → c12 → c18 → c19 → c13 → c14 → c15 → c9 → c3 → c4 → c5 → c11 → c10 → c16 → c17 → c23 → c25 → c24 → c22 → c21 → c20</p><p>解除 door:0 后:c0 → c6 → c12 → c18 → c19 → c20 → c21 → c22 → c24 → c25 → c23 → c17 → c11 → c5 → c4 → c3 → c9 → c10 → c16 → c15 → c14 → c13 → c7 → c8 → c2 → c1</p></details></article><article><h2>171 · 第18章 · 综合挑战 · 拼块 · 出口布局 171</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" 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c11。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c25 → c20 → c14 → c15 → c10 → c11 → c7 → c6 → c0 → c1 → c2 → c3 → c8 → c12 → c17 → c16 → c21 → c26 → c27 → c22 → c23 → c28 → c29 → c24 → c19 → c18 → c13 → c9 → c4 → c5</p><p>解除 wall:0 后:c25 → c20 → c14 → c15 → c10 → c6 → c0 → c1 → c2 → c3 → c8 → c7 → c11 → c16 → c21 → c26 → c27 → c22 → c23 → c28 → c29 → c24 → c19 → c18 → c17 → c12 → c13 → c9 → c4 → c5</p><p>解除 wall:1 后:c25 → c20 → c14 → c15 → c10 → c6 → c0 → c1 → c2 → c7 → c11 → c12 → c17 → c16 → c21 → c26 → c27 → c22 → c23 → c28 → c29 → c24 → c19 → c18 → c13 → c9 → c8 → c3 → c4 → c5</p><p>解除 wall:2 后:c25 → c20 → c14 → c15 → c10 → c6 → c0 → c1 → c2 → c3 → c8 → c7 → c11 → c16 → c21 → c26 → c27 → c28 → c29 → c24 → c19 → c18 → c23 → c22 → c17 → c12 → c13 → c9 → c4 → c5</p></details></article><article><h2>172 · 第18章 · 综合挑战 · 拼块 · 出口布局 172</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 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c14 → c20 → c19 → c25 → c26 → c31 → c30 → c29 → c24 → c23 → c22 → c21 → c27 → c28</p></details></div><h3>推理依据</h3><ul><li>c11 必须左与上拐角</li><li>每步蓝橙交替</li><li>墙 c17—c23 封闭该邻接</li></ul><p>关键分叉:第 4 步应走 c11,诱惑路线走 c5。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c11 后:c0 → c1 → c6 → c5 → c4 → c9 → c10 → c11 → c17 → c18 → c12 → c13 → c7 → c2 → c3 → c8 → c14 → c20 → c19 → c25 → c26 → c31 → c30 → c29 → c24 → c23 → c22 → c16 → c15 → c21 → c27 → c28</p><p>解除 alternation 后:c0 → c6 → c11 → c10 → c5 → c4 → c9 → c15 → c16 → c17 → c18 → c12 → c1 → c2 → c3 → c8 → c7 → c13 → c14 → c20 → c19 → c25 → c26 → c31 → c30 → c29 → c24 → c23 → c22 → c21 → c27 → c28</p><p>解除 wall:0 后:c0 → c1 → c7 → c2 → c3 → c8 → c14 → c20 → c26 → c31 → c30 → c29 → c24 → c25 → c19 → c13 → c12 → c18 → c17 → c23 → c22 → c16 → c10 → c11 → c6 → c5 → c4 → c9 → c15 → c21 → c27 → c28</p></details></article><article><h2>173 · 第18章 · 综合挑战 · 拼块 · 出口布局 173</h2><div class="boards"><figure><svg 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c2</p></details></div><h3>推理依据</h3><ul><li>c12 为第17步,要求奇</li><li>c13 必须右与下拐角</li><li>门 c14—c13 通过前按已走格数切换,通过后保持开启;正确解从第7步末端通过</li></ul><p>关键分叉:第 5 步应走 c8,诱惑路线走 c2。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c12 后:c15 → c5 → c4 → c3 → c2 → c7 → c8 → c9 → c14 → c13 → c19 → c20 → c21 → c27 → c26 → c25 → c24 → c18 → c17 → c23 → c22 → c16 → c10 → c0 → c1 → c6 → c11 → c12</p><p>解除 direction:c13 后:c15 → c5 → c4 → c3 → c2 → c7 → c8 → c9 → c14 → c13 → c12 → c18 → c19 → c20 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c16 → c10 → c0 → c1 → c6 → c11 → c17</p><p>解除 door:0 后:c15 → c5 → c4 → c9 → c8 → c3 → c2 → c7 → c12 → c18 → c19 → c13 → c14 → c20 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c16 → c10 → c0 → c1 → c6 → c11 → c17</p></details></article><article><h2>174 · 第18章 · 综合挑战 · 方格 · 出口布局 174</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 174"><polygon points="20,20 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">20</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c26</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">19</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c5 → c4 → c10 → c15 → c14 → c9 → c3 → c2 → c1 → c0 → c6 → c7 → c8 → c13 → c18 → c19 → c20 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c16 → c11 → c12 → c17</p></details></div><h3>推理依据</h3><ul><li>c1 必须左右直行</li><li>墙 c15—c20 封闭该邻接</li><li>墙 c9—c10 封闭该邻接</li></ul><p>关键分叉:第 10 步应走 c0,诱惑路线走 c7。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c1 后:c5 → c4 → c10 → c15 → c14 → c9 → c3 → c2 → c1 → c7 → c8 → c13 → c12 → c17 → c18 → c19 → c20 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c16 → c11 → c6 → c0</p><p>解除 wall:0 后:c5 → c4 → c10 → c15 → c20 → c21 → c27 → c26 → c25 → c19 → c14 → c9 → c3 → c2 → c1 → c0 → c6 → c7 → c8 → c13 → c18 → c24 → c23 → c22 → c16 → c11 → c12 → c17</p><p>解除 wall:1 后:c5 → c4 → c3 → c2 → c1 → c0 → c6 → c7 → c8 → c9 → c10 → c15 → c14 → c13 → c18 → c19 → c20 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c16 → c11 → c12 → c17</p></details></article><article><h2>175 · 第18章 · 综合挑战 · 拼块 · 出口布局 175</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 出口布局 175"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 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c14。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c21 → c27 → c26 → c25 → c24 → c19 → c14 → c8 → c7 → c13 → c18 → c23 → c22 → c17 → c12 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c16 → c15 → c10 → c9 → c20</p><p>解除 wall:0 后:c21 → c27 → c26 → c25 → c24 → c19 → c20 → c9 → c14 → c13 → c18 → c23 → c22 → c17 → c12 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c15 → c16</p></details></article><article><h2>177 · 第18章 · 综合挑战 · 拼块 · 出口布局 177</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 177"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 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c0 → c5 → c6 → c12 → c11 → c17 → c18 → c19 → c20 → c21 → c26 → c27 → c31 → c30 → c25 → c29 → c24 → c23 → c22 → c28</p><p>解除 wall:0 后:c15 → c14 → c8 → c7 → c13 → c19 → c18 → c17 → c11 → c12 → c6 → c5 → c0 → c1 → c2 → c3 → c4 → c9 → c10 → c16 → c27 → c31 → c30 → c26 → c21 → c20 → c25 → c29 → c24 → c23 → c22 → c28</p></details></article><article><h2>178 · 第18章 · 综合挑战 · 拼块 · 交错挑战 178</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 交错挑战 178"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#f1eef9" 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y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">15</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c6 → c0 → c1 → c7 → c8 → c2 → c3 → c4 → c5 → c11 → c10 → c16 → c17 → c21 → c27 → c26 → c20 → c19 → c25 → c24 → c23 → c22 → c18 → c12 → c13 → c14 → c15 → c9</p></details></div><h3>推理依据</h3><ul><li>c4 为第8步,要求偶</li><li>c15 必须左与上拐角</li><li>门 c20—c19 通过前按已走格数切换,通过后保持开启;正确解从第17步末端通过</li></ul><p>关键分叉:第 4 步应走 c7,诱惑路线走 c2。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c4 后:c6 → c0 → c1 → c2 → c8 → c7 → c13 → c12 → c18 → c22 → c23 → c24 → c25 → c26 → c27 → c21 → c20 → c19 → c14 → c15 → c9 → c3 → c4 → c5 → c11 → c10 → c16 → c17</p><p>解除 direction:c15 后:c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c15 → c16 → c17 → c21 → c27 → c26 → c20 → c19 → c25 → c24 → c14 → c8 → c7 → c13 → c12 → c18 → c22 → c23</p><p>解除 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font-family="system-ui" font-size="10" fill="#665c78">c28</text><text x="275" y="323.66666666666663" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">15</text><text x="275" y="341.66666666666663" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c29</text></svg></figure><p>c6 → c12 → c11 → c10 → c3 → c2 → c5 → c9 → c15 → c16 → c17 → c18 → c24 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c25 → c19 → c20 → c14 → c13 → c7 → c8 → c4 → c1 → c0</p></details></div><h3>推理依据</h3><ul><li>c24 为第13步,要求奇</li><li>墙 c27—c28 封闭该邻接</li></ul><p>关键分叉:第 5 步应走 c3,诱惑路线走 c9。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c24 后:c6 → c12 → c11 → c10 → c9 → c15 → c16 → c17 → c18 → c24 → c23 → c29 → c28 → c22 → c21 → c27 → c26 → c25 → c19 → c20 → c14 → c13 → c7 → c8 → c4 → c5 → c3 → c2 → c1 → c0</p><p>解除 wall:0 后:c6 → c12 → c11 → c10 → c3 → c2 → c5 → c9 → c15 → c14 → c20 → c21 → c22 → c16 → c17 → c18 → c24 → c23 → c29 → c28 → c27 → c26 → c25 → c19 → c13 → c7 → c8 → c4 → c1 → c0</p></details></article><article><h2>180 · 第18章 · 综合挑战 · 六边 · 出口布局 180</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 180"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 114.68544414709862,47.33333333333333" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="177.8090735784977,102 162.02816622064793,129.33333333333331 130.4663515049484,129.33333333333331 114.68544414709862,102 130.46635150494836,74.66666666666666 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c15,诱惑路线走 c10。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c23 → c17 → c11 → c5 → c0 → c1 → c2 → c6 → c12 → c18 → c19 → c20 → c21 → c24 → c25 → c22 → c16 → c10 → c15 → c14 → c9 → c4 → c3 → c8 → c13 → c7</p><p>解除 wall:0 后:c23 → c17 → c11 → c5 → c0 → c1 → c2 → c6 → c12 → c18 → c19 → c20 → c21 → c24 → c25 → c22 → c16 → c15 → c14 → c13 → c7 → c8 → c9 → c10 → c4 → c3</p><p>解除 wall:1 后:c23 → c17 → c11 → c5 → c0 → c1 → c2 → c6 → c12 → c18 → c19 → c20 → c21 → c24 → c25 → c22 → c16 → c10 → c4 → c3 → c9 → c15 → c14 → c13 → c7 → c8</p><p>解除 door:0 后:c23 → c17 → c11 → c5 → c0 → c1 → c2 → c6 → c12 → c18 → c19 → c20 → c21 → c24 → c25 → c22 → c16 → c10 → c4 → c3 → c9 → c8 → c7 → c13 → c14 → c15</p></details></article><article><h2>181 · 第19章 · 综合挑战 · 拼块 · 出口布局 181</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 331.42857142857144" role="img" aria-label="拼块 · 出口布局 181"><polygon points="20,20 68.57142857142857,20 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→ c33 → c26 → c27 → c34 → c35 → c28 → c23 → c17 → c11 → c10 → c9 → c15 → c16 → c22 → c21 → c20 → c14 → c25</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c22—c23 封闭该邻接</li></ul><p>关键分叉:第 5 步应走 c8,诱惑路线走 c1。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c5 → c4 → c3 → c2 → c1 → c0 → c6 → c7 → c8 → c14 → c13 → c12 → c18 → c19 → c25 → c24 → c29 → c30 → c31 → c32 → c33 → c34 → c35 → c28 → c23 → c17 → c11 → c10 → c9 → c15 → c16 → c22 → c27 → c26 → c21 → c20</p><p>解除 wall:0 后:c5 → c4 → c3 → c2 → c8 → c7 → c1 → c0 → c6 → c12 → c13 → c19 → c18 → c24 → c29 → c30 → c31 → c32 → c33 → c26 → c27 → c34 → c35 → c28 → c23 → c22 → c16 → c17 → c11 → c10 → c9 → c15 → c21 → c20 → c14 → c25</p></details></article><article><h2>182 · 第19章 · 综合挑战 · 方格 · 出口布局 182</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 182"><polygon points="20,20 76.66666666666666,20 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c25</p><p>解除 door:0 后:c16 → c17 → c23 → c29 → c28 → c27 → c26 → c25 → c24 → c18 → c12 → c6 → c0 → c1 → c2 → c3 → c4 → c5 → c11 → c10 → c9 → c8 → c7 → c13 → c19 → c20 → c14 → c15 → c21 → c22</p></details></article><article><h2>183 · 第19章 · 综合挑战 · 六边 · 出口布局 183</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 183"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 114.68544414709862,47.33333333333333" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="177.8090735784977,102 162.02816622064793,129.33333333333331 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c19 → c14 → c15 → c21</p></details></div><h3>推理依据</h3><ul><li>c16 为第9步,要求奇</li><li>墙 c15—c16 封闭该邻接</li></ul><p>关键分叉:第 8 步应走 c17,诱惑路线走 c16。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c16 后:c20 → c26 → c27 → c28 → c29 → c23 → c22 → c16 → c17 → c11 → c5 → c4 → c10 → c9 → c3 → c2 → c8 → c13 → c7 → c1 → c0 → c6 → c12 → c18 → c24 → c25 → c19 → c14 → c15 → c21</p><p>解除 wall:0 后:c20 → c19 → c14 → c15 → c16 → c21 → c22 → c23 → c17 → c11 → c5 → c4 → c10 → c9 → c3 → c2 → c8 → c13 → c7 → c1 → c0 → c6 → c12 → c18 → c24 → c25 → c26 → c27 → c28 → c29</p></details></article><article><h2>184 · 第19章 · 综合挑战 · 拼块 · 出口布局 184</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 331.42857142857144" role="img" aria-label="拼块 · 出口布局 184"><polygon points="20,20 68.57142857142857,20 68.57142857142857,68.57142857142857 20,68.57142857142857" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="68.57142857142857,20 117.14285714285714,20 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alternation 后:c7 → c3 → c4 → c8 → c9 → c10 → c14 → c13 → c19 → c18 → c17 → c12 → c11 → c16 → c23 → c24 → c25 → c26 → c27 → c20 → c21 → c28 → c35 → c34 → c33 → c32 → c31 → c30 → c29 → c22 → c15 → c5 → c6 → c2 → c1 → c0</p><p>解除 wall:0 后:c7 → c3 → c4 → c8 → c9 → c10 → c14 → c13 → c19 → c18 → c25 → c26 → c27 → c20 → c21 → c28 → c35 → c34 → c33 → c32 → c31 → c30 → c29 → c22 → c15 → c16 → c23 → c24 → c17 → c12 → c11 → c5 → c0 → c1 → c2 → c6</p><p>解除 wall:1 后:c7 → c3 → c4 → c8 → c9 → c10 → c14 → c13 → c19 → c18 → c25 → c26 → c27 → c20 → c21 → c28 → c35 → c34 → c33 → c32 → c31 → c24 → c17 → c12 → c11 → c16 → c23 → c30 → c29 → c22 → c15 → c5 → c0 → c1 → c2 → c6</p></details></article><article><h2>185 · 第19章 · 综合挑战 · 六边 · 出口布局 185</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 442.9297141818125" role="img" aria-label="六边 · 出口布局 185"><polygon points="91.57894736842105,50.99459339860096 73.6842105263158,81.98918679720192 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YaHei" font-size="11" font-weight="700">3</text><text x="270.5263157894737" y="370.94052738461056" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="324.2105263157895" y="383.9351207832116" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">4</text><text x="324.2105263157895" y="401.9351207832116" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c20 → c21 → c22 → c23 → c17 → c11 → c5 → c4 → c10 → c16 → c15 → c9 → c3 → c8 → c2 → c1 → c0 → c6 → c7 → c12 → c18 → c13 → c19 → c14</p></details></div><h3>推理依据</h3><ul><li>c8 为第14步,要求偶</li><li>墙 c13—c14 封闭该邻接</li><li>门 c5—c4 通过前按已走格数切换,通过后保持开启;正确解从第7步末端通过</li></ul><p>关键分叉:第 1 步应走 c20,诱惑路线走 c5。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c8 后:c5 → c11 → c17 → c23 → c22 → c16 → c21 → c20 → c19 → c14 → c15 → c10 → c4 → c3 → c2 → c1 → c0 → c6 → c7 → c12 → c18 → c13 → c8 → c9</p><p>解除 wall:0 后:c20 → c21 → c22 → c23 → c17 → c11 → c5 → c4 → c10 → c16 → c15 → c9 → c3 → c8 → c2 → c1 → c0 → c6 → c7 → c12 → c18 → c13 → c14 → c19</p><p>解除 door:0 后:c20 → c21 → c22 → c23 → c17 → c16 → c11 → c5 → c4 → c10 → c15 → c9 → c3 → c8 → c2 → c1 → c0 → c6 → c7 → c12 → c18 → c13 → c19 → c14</p></details></article><article><h2>186 · 第19章 · 综合挑战 · 六边 · 出口布局 186</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 186"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 114.68544414709862,102 83.12362943139908,102 67.34272207354931,74.66666666666666 83.12362943139907,47.333333333333336 114.68544414709862,47.33333333333333" fill="#f1eef9" 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c27 → c28 → c22 → c23 → c29</p></details></div><h3>推理依据</h3><ul><li>c15 为第23步,要求奇</li><li>墙 c19—c24 封闭该邻接</li><li>墙 c1—c2 封闭该邻接</li></ul><p>关键分叉:第 18 步应走 c10,诱惑路线走 c15。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c15 后:c20 → c25 → c24 → c18 → c19 → c14 → c13 → c12 → c6 → c0 → c1 → c7 → c2 → c8 → c3 → c4 → c9 → c15 → c10 → c5 → c11 → c16 → c17 → c23 → c29 → c28 → c27 → c22 → c21 → c26</p><p>解除 wall:0 后:c20 → c26 → c25 → c24 → c19 → c18 → c13 → c12 → c6 → c0 → c1 → c7 → c2 → c3 → c8 → c14 → c9 → c4 → c5 → c10 → c15 → c21 → c27 → c28 → c29 → c23 → c17 → c22 → c16 → c11</p><p>解除 wall:1 后:c20 → c25 → c24 → c18 → c19 → c14 → c13 → c12 → c7 → c6 → c0 → c1 → c2 → c8 → c3 → c4 → c9 → c10 → c5 → c11 → c17 → c16 → c15 → c21 → c26 → c27 → c28 → c22 → c23 → c29</p></details></article><article><h2>187 · 第19章 · 综合挑战 · 拼块 · 出口布局 187</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 331.42857142857144" role="img" aria-label="拼块 · 出口布局 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c0 → c6 → c13 → c14 → c7 → c8 → c15 → c16 → c9 → c2 → c3 → c4 → c5 → c12 → c11 → c10 → c17 → c18 → c19 → c23 → c28 → c35 → c34 → c33 → c32 → c31 → c30 → c29 → c20 → c21 → c24 → c25 → c26 → c27 → c22</p></details></div><h3>推理依据</h3><ul><li>c12 必须左与上拐角</li><li>每步蓝橙交替</li><li>门 c31—c30 通过前按已走格数切换,通过后保持开启;正确解从第27步末端通过</li></ul><p>关键分叉:第 13 步应走 c4,诱惑路线走 c10。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c12 后:c1 → c0 → c6 → c13 → c14 → c7 → c8 → c15 → c16 → c9 → c2 → c3 → c10 → c17 → c18 → c11 → c4 → c5 → c12 → c19 → c23 → c28 → c35 → c34 → c33 → c32 → c31 → c30 → c29 → c20 → c21 → c24 → c25 → c26 → c27 → c22</p><p>解除 alternation 后:c1 → c0 → c6 → c7 → c8 → c15 → c16 → c17 → c10 → c9 → c2 → c3 → c4 → c5 → c12 → c11 → c18 → c19 → c23 → c28 → c35 → c34 → c33 → c32 → c31 → c30 → c29 → c20 → c13 → c14 → c21 → c24 → c25 → c26 → c27 → c22</p><p>解除 door:0 后:c1 → c0 → c6 → c13 → c14 → c7 → c8 → c15 → c16 → c9 → c2 → c3 → c4 → c5 → c12 → c11 → c10 → c17 → c18 → c19 → c23 → c22 → c27 → c26 → c25 → c24 → c21 → c20 → c29 → c30 → c31 → c32 → c33 → c34 → c35 → c28</p></details></article><article><h2>188 · 第19章 · 综合挑战 · 拼块 · 交错挑战 188</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 交错挑战 188"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 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fill="#665c78">c27</text></svg></figure><p>c15 → c10 → c11 → c16 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c17 → c18 → c19 → c20 → c14 → c9 → c8 → c13 → c12 → c7 → c6 → c0 → c1 → c2 → c3 → c4 → c5</p></details></div><h3>推理依据</h3><ul><li>c20 为第15步,要求奇</li><li>c14 必须上下直行</li><li>c24 必须左右直行</li><li>门 c24—c23 通过前按已走格数切换,通过后保持开启;正确解从第9步末端通过</li></ul><p>关键分叉:第 3 步应走 c11,诱惑路线走 c4。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c20 后:c15 → c10 → c4 → c5 → c11 → c16 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c17 → c18 → c19 → c13 → c8 → c7 → c12 → c6 → c0 → c1 → c2 → c3 → c9 → c14 → c20</p><p>解除 direction:c14 后:c15 → c10 → c4 → c5 → c11 → c16 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c17 → c18 → c19 → c20 → c14 → c13 → c12 → c6 → c0 → c1 → c7 → c8 → c2 → c3 → c9</p><p>解除 direction:c24 后:c15 → c16 → c21 → c27 → c26 → c25 → c20 → c14 → c9 → c10 → c11 → c5 → c4 → c3 → c2 → c1 → c7 → c8 → c13 → c12 → c18 → c19 → c24 → c23 → c22 → c17 → c6 → c0</p><p>解除 door:0 后:c15 → c16 → c11 → c10 → c9 → c14 → c20 → c21 → c27 → c26 → c25 → c24 → c23 → c22 → c17 → c6 → c0 → c1 → c7 → c12 → c18 → c19 → c13 → c8 → c2 → c3 → c4 → c5</p></details></article><article><h2>189 · 第19章 · 综合挑战 · 拼块 · 换一种思路 189</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 换一种思路 189"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 190,20 190,76.66666666666666 133.33333333333331,76.66666666666666 133.33333333333331,133.33333333333331 76.66666666666666,133.33333333333331" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,20 246.66666666666666,20 246.66666666666666,76.66666666666666 190,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 303.3333333333333,20 303.3333333333333,76.66666666666666 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c0 → c4 → c9 → c10 → c16 → c15 → c21 → c25 → c26 → c22 → c17</p><p>解除 wall:0 后:c8 → c14 → c20 → c24 → c29 → c28 → c27 → c23 → c18 → c19 → c13 → c12 → c11 → c5 → c6 → c7 → c3 → c2 → c1 → c0 → c4 → c9 → c10 → c16 → c17 → c22 → c26 → c25 → c21 → c15</p></details></article><article><h2>190 · 第19章 · 综合挑战 · 六边 · 出口布局 190</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 442.9297141818125" role="img" aria-label="六边 · 出口布局 190"><polygon points="91.57894736842105,50.99459339860096 73.6842105263158,81.98918679720192 37.894736842105274,81.98918679720192 20,50.99459339860097 37.894736842105246,20.000000000000004 73.6842105263158,20" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="145.26315789473685,81.98918679720192 127.36842105263159,112.9837801958029 91.57894736842105,112.9837801958029 73.6842105263158,81.98918679720192 91.57894736842104,50.99459339860097 127.36842105263159,50.99459339860096" fill="#64acf3" stroke="#aaa1c7" 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font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="324.2105263157895" y="383.9351207832116" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="11" font-weight="700">5</text><text x="324.2105263157895" y="401.9351207832116" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c19 → c20 → c21 → c22 → c23 → c17 → c16 → c15 → c14 → c9 → c8 → c13 → c18 → c12 → c6 → c0 → c1 → c7 → c2 → c3 → c4 → c10 → c5 → c11</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c13—c14 封闭该邻接</li><li>墙 c11—c16 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c20,诱惑路线走 c18。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c19 → c18 → c12 → c13 → c7 → c6 → c0 → c1 → c2 → c3 → c8 → c14 → c20 → c21 → c15 → c9 → c4 → c5 → c10 → c11 → c17 → c16 → c22 → c23</p><p>解除 wall:0 后:c19 → c20 → c21 → c22 → c23 → c17 → c16 → c15 → c14 → c13 → c18 → c12 → c6 → c0 → c1 → c7 → c2 → c3 → c8 → c9 → c4 → c10 → c5 → c11</p><p>解除 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font-size="14.085714285714284" font-weight="700">36</text><text x="68.57142857142857" y="297.1428571428571" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c33</text><text x="190" y="279.1428571428571" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="14.085714285714284" font-weight="700">31</text><text x="190" y="297.1428571428571" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c34</text><text x="238.57142857142856" y="279.1428571428571" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="14.085714285714284" font-weight="700">30</text><text x="238.57142857142856" y="297.1428571428571" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c35</text></svg></figure><p>c0 → c7 → c14 → c15 → c21 → c22 → c16 → c17 → c23 → c24 → c18 → c19 → c12 → c11 → c10 → c9 → c8 → c1 → c2 → c3 → c4 → c5 → c6 → c13 → c20 → c26 → c25 → c32 → c31 → c35 → c34 → c30 → c29 → c28 → c27 → c33</p></details></div><h3>推理依据</h3><ul><li>c19 必须左与上拐角</li><li>每步蓝橙交替</li><li>门 c21—c22 通过前按已走格数切换,通过后保持开启;正确解从第5步末端通过</li></ul><p>关键分叉:第 2 步应走 c7,诱惑路线走 c1。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c19 后:c0 → c1 → c8 → c7 → c14 → c15 → c21 → c22 → c16 → c17 → c23 → c24 → c18 → c11 → c10 → c9 → c2 → c3 → c4 → c5 → c6 → c13 → c12 → c19 → c20 → c26 → c25 → c32 → c31 → c35 → c34 → c30 → c29 → c28 → c27 → c33</p><p>解除 alternation 后:c0 → c7 → c14 → c15 → c21 → c22 → c16 → c17 → c23 → c24 → c18 → c19 → c12 → c11 → c10 → c9 → c8 → c1 → c2 → c3 → c4 → c5 → c6 → c13 → c20 → c26 → c25 → c32 → c31 → c35 → c34 → c30 → c29 → c28 → c33 → c27</p><p>解除 door:0 后:c0 → c1 → c8 → c7 → c14 → c15 → c16 → c17 → c23 → c24 → c18 → c19 → c12 → c11 → c10 → c9 → c2 → c3 → c4 → c5 → c6 → c13 → c20 → c26 → c25 → c32 → c31 → c35 → c34 → c30 → c29 → c22 → c21 → c28 → c27 → c33</p></details></article><article><h2>192 · 第20章 · 综合挑战 · 拼块 · 出口布局 192</h2><div class="boards"><figure><svg 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必须左与上拐角</li><li>c32 必须上与右拐角</li><li>门 c23—c24 通过前按已走格数切换,通过后保持开启;正确解从第27步末端通过</li></ul><p>关键分叉:第 2 步应走 c20,诱惑路线走 c15。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c15 后:c14 → c15 → c20 → c25 → c32 → c33 → c26 → c27 → c34 → c35 → c28 → c21 → c16 → c11 → c4 → c3 → c10 → c9 → c8 → c2 → c1 → c6 → c7 → c13 → c19 → c18 → c23 → c24 → c31 → c30 → c29 → c22 → c17 → c12 → c5 → c0</p><p>解除 direction:c12 后:c14 → c20 → c25 → c32 → c33 → c26 → c27 → c34 → c35 → c28 → c21 → c16 → c11 → c4 → c3 → c10 → c15 → c9 → c8 → c2 → c1 → c0 → c5 → c6 → c7 → c13 → c19 → c18 → c23 → c24 → c31 → c30 → c29 → c22 → c17 → c12</p><p>解除 direction:c19 后:c14 → c13 → c7 → c6 → c1 → c0 → c5 → c12 → c17 → c18 → c23 → c22 → c29 → c30 → c31 → c24 → c19 → c20 → c25 → c32 → c33 → c26 → c27 → c34 → c35 → c28 → c21 → c16 → c11 → c4 → c3 → c10 → c15 → c9 → c8 → c2</p><p>解除 direction:c32 后:c14 → c13 → c19 → c18 → c23 → c24 → c25 → c20 → c15 → c9 → c10 → c3 → c4 → c11 → c16 → c21 → c28 → c35 → c34 → c27 → c26 → c33 → c32 → c31 → c30 → c29 → c22 → c17 → c12 → c5 → c0 → c1 → c2 → c8 → c7 → c6</p><p>解除 door:0 后:c14 → c20 → c25 → c32 → c33 → c26 → c27 → c34 → c35 → c28 → c21 → c16 → c11 → c4 → c3 → c10 → c15 → c9 → c8 → c2 → c1 → c0 → c5 → c12 → c17 → c22 → c29 → c30 → c31 → c24 → c23 → c18 → c19 → c13 → c7 → c6</p></details></article><article><h2>193 · 第20章 · 综合挑战 · 拼块 · 出口布局 193</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拼块 · 出口布局 193"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 133.33333333333331,76.66666666666666 76.66666666666666,76.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 190,20 190,133.33333333333331 133.33333333333331,133.33333333333331" fill="#64acf3" stroke="#aaa1c7" 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c25 → c29 → c28 → c27 → c26 → c23 → c22 → c21 → c16 → c17 → c11 → c12 → c18 → c19 → c24</p><p>解除 wall:0 后:c0 → c6 → c7 → c1 → c2 → c3 → c4 → c5 → c10 → c9 → c8 → c13 → c14 → c15 → c20 → c19 → c24 → c25 → c29 → c28 → c27 → c26 → c23 → c22 → c21 → c16 → c17 → c18 → c12 → c11</p><p>解除 wall:1 后:c0 → c6 → c7 → c1 → c2 → c3 → c8 → c13 → c14 → c9 → c4 → c5 → c10 → c15 → c20 → c25 → c29 → c28 → c24 → c19 → c27 → c26 → c23 → c22 → c21 → c16 → c17 → c18 → c12 → c11</p></details></article><article><h2>194 · 第20章 · 综合挑战 · 六边 · 出口布局 194</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 339.83723979914566 450" role="img" aria-label="六边 · 出口布局 194"><polygon points="83.12362943139908,47.33333333333333 67.34272207354931,74.66666666666666 35.78090735784978,74.66666666666666 20,47.333333333333336 35.780907357849756,20.000000000000004 67.34272207354931,20" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="130.4663515049484,74.66666666666666 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c25 → c19 → c20 → c14 → c9 → c15 → c10 → c16 → c21 → c26 → c27 → c22 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c3 → c2 → c7 → c1 → c6 → c0</p></details></div><h3>推理依据</h3><ul><li>c22 为第17步,要求奇</li><li>墙 c0—c1 封闭该邻接</li><li>墙 c20—c25 封闭该邻接</li></ul><p>关键分叉:第 17 步应走 c22,诱惑路线走 c28。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c22 后:c8 → c13 → c12 → c18 → c24 → c25 → c19 → c20 → c14 → c9 → c15 → c10 → c16 → c21 → c26 → c27 → c28 → c29 → c23 → c22 → c17 → c11 → c5 → c4 → c3 → c2 → c7 → c1 → c6 → c0</p><p>解除 wall:0 后:c8 → c13 → c12 → c18 → c24 → c25 → c19 → c20 → c14 → c9 → c15 → c10 → c16 → c21 → c26 → c27 → c22 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c3 → c2 → c7 → c1 → c0 → c6</p><p>解除 wall:1 后:c8 → c13 → c12 → c18 → c24 → c19 → c25 → c20 → c14 → c9 → c15 → c10 → c16 → c21 → c26 → c27 → c22 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c3 → c2 → c7 → c1 → c6 → c0</p></details></article><article><h2>195 · 第20章 · 综合挑战 · 拼块 · 出口布局 195</h2><div class="boards"><figure><svg 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fill="#665c78">c29</text></svg></figure><p>c0 → c6 → c11 → c16 → c17 → c12 → c7 → c1 → c2 → c13 → c18 → c22 → c21 → c26 → c27 → c28 → c23 → c19 → c14 → c8 → c3 → c4 → c5 → c10 → c9 → c15 → c20 → c24 → c25 → c29</p></details></div><h3>推理依据</h3><ul><li>每步蓝橙交替</li><li>墙 c19—c20 封闭该邻接</li></ul><p>关键分叉:第 2 步应走 c6,诱惑路线走 c1。排除依据:蓝橙颜色必须交替。</p><details><summary>逐项机制必要性反例</summary><p>解除 alternation 后:c0 → c1 → c7 → c6 → c11 → c16 → c17 → c12 → c13 → c18 → c22 → c21 → c26 → c27 → c28 → c23 → c19 → c14 → c8 → c2 → c3 → c4 → c5 → c10 → c9 → c15 → c20 → c24 → c25 → c29</p><p>解除 wall:0 后:c0 → c6 → c11 → c16 → c17 → c12 → c7 → c1 → c2 → c13 → c14 → c8 → c3 → c4 → c5 → c10 → c9 → c15 → c20 → c19 → c18 → c22 → c21 → c26 → c27 → c28 → c23 → c24 → c25 → c29</p></details></article><article><h2>196 · 第20章 · 综合挑战 · 方格 · 出口布局 196</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="方格 · 出口布局 196"><polygon points="20,20 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c0</p></details></div><h3>推理依据</h3><ul><li>c25 必须左与上拐角</li><li>墙 c13—c14 封闭该邻接</li></ul><p>关键分叉:第 6 步应走 c19,诱惑路线走 c26。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c25 后:c6 → c12 → c18 → c24 → c25 → c26 → c27 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c3 → c2 → c8 → c14 → c15 → c9 → c10 → c16 → c22 → c21 → c20 → c19 → c13 → c7 → c1 → c0</p><p>解除 wall:0 后:c6 → c12 → c18 → c24 → c25 → c19 → c20 → c26 → c27 → c28 → c29 → c23 → c17 → c11 → c5 → c4 → c3 → c2 → c8 → c9 → c10 → c16 → c22 → c21 → c15 → c14 → c13 → c7 → c1 → c0</p></details></article><article><h2>197 · 第20章 · 综合挑战 · 拼块 · 出口布局 197</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 331.42857142857144" role="img" aria-label="拼块 · 出口布局 197"><polygon points="20,20 68.57142857142857,20 68.57142857142857,68.57142857142857 20,68.57142857142857" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="68.57142857142857,20 117.14285714285714,20 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font-weight="700">25</text><text x="287.1428571428571" y="297.1428571428571" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c34</text><text x="335.7142857142857" y="279.1428571428571" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="14.085714285714284" font-weight="700">26</text><text x="335.7142857142857" y="297.1428571428571" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c35</text></svg></figure><p>c1 → c0 → c6 → c13 → c19 → c24 → c29 → c30 → c31 → c25 → c20 → c15 → c14 → c7 → c8 → c2 → c3 → c9 → c16 → c21 → c27 → c26 → c32 → c33 → c34 → c35 → c28 → c23 → c22 → c18 → c17 → c10 → c11 → c12 → c5 → c4</p></details></div><h3>推理依据</h3><ul><li>c16 必须上下直行</li><li>每步蓝橙交替</li><li>门 c14—c7 通过前按已走格数切换,通过后保持开启;正确解从第13步末端通过</li></ul><p>关键分叉:第 4 步应走 c13,诱惑路线走 c7。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c16 后:c1 → c0 → c6 → c7 → c8 → c2 → c3 → c9 → c16 → c15 → c14 → c13 → c19 → c24 → c29 → c30 → c31 → c25 → c20 → c21 → c27 → c26 → c32 → c33 → c34 → c35 → c28 → c23 → c22 → c18 → c17 → c10 → c11 → c12 → c5 → c4</p><p>解除 alternation 后:c1 → c0 → c6 → c7 → c8 → c2 → c3 → c9 → c16 → c21 → c27 → c26 → c25 → c20 → c15 → c14 → c13 → c19 → c24 → c29 → c30 → c31 → c32 → c33 → c34 → c35 → c28 → c23 → c22 → c18 → c17 → c10 → c11 → c12 → c5 → c4</p><p>解除 door:0 后:c1 → c0 → c6 → c7 → c14 → c13 → c19 → c24 → c29 → c30 → c31 → c25 → c20 → c15 → c8 → c2 → c3 → c9 → c16 → c21 → c27 → c26 → c32 → c33 → c34 → c35 → c28 → c23 → c22 → c18 → c17 → c10 → c11 → c12 → c5 → c4</p></details></article><article><h2>198 · 第20章 · 综合挑战 · 拼块 · 交错挑战 198</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 323.3333333333333" role="img" aria-label="拼块 · 交错挑战 198"><polygon points="20,20 76.66666666666666,20 76.66666666666666,76.66666666666666 20,76.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="76.66666666666666,20 133.33333333333331,20 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font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">21</text><text x="275" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c26</text><text x="331.66666666666663" y="267" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="16.43333333333333" font-weight="700">22</text><text x="331.66666666666663" y="285" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c27</text></svg></figure><p>c13 → c19 → c25 → c24 → c23 → c22 → c17 → c18 → c12 → c11 → c6 → c0 → c1 → c7 → c2 → c3 → c8 → c14 → c15 → c20 → c26 → c27 → c21 → c16 → c10 → c9 → c4 → c5</p></details></div><h3>推理依据</h3><ul><li>c11 为第10步,要求偶</li><li>c20 必须上下直行</li><li>门 c21—c16 通过前按已走格数切换,通过后保持开启;正确解从第23步末端通过</li></ul><p>关键分叉:第 2 步应走 c19,诱惑路线走 c18。排除依据:该格步号奇偶不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 parity:c11 后:c13 → c18 → c12 → c7 → c2 → c1 → c0 → c6 → c11 → c17 → c22 → c23 → c24 → c25 → c19 → c14 → c15 → c20 → c26 → c27 → c21 → c16 → c10 → c5 → c4 → c9 → c8 → c3</p><p>解除 direction:c20 后:c13 → c24 → c23 → c22 → c17 → c18 → c12 → c11 → c6 → c0 → c1 → c7 → c2 → c3 → c8 → c14 → c19 → c25 → c26 → c27 → c21 → c20 → c15 → c16 → c10 → c9 → c4 → c5</p><p>解除 door:0 后:c13 → c19 → c25 → c24 → c23 → c22 → c17 → c18 → c12 → c11 → c6 → c0 → c1 → c7 → c2 → c3 → c4 → c5 → c10 → c16 → c21 → c27 → c26 → c20 → c15 → c9 → c8 → c14</p></details></article><article><h2>199 · 第20章 · 综合挑战 · 六边 · 换一种思路 199</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 442.9297141818125" role="img" aria-label="六边 · 换一种思路 199"><polygon points="91.57894736842105,50.99459339860096 73.6842105263158,81.98918679720192 37.894736842105274,81.98918679720192 20,50.99459339860097 37.894736842105246,20.000000000000004 73.6842105263158,20" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="145.26315789473685,81.98918679720192 127.36842105263159,112.9837801958029 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text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="54" y="114" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">14</text><text x="54" y="132" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="122" y="114" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">15</text><text x="122" y="132" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="190" y="114" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">2</text><text x="190" y="132" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="258" y="114" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">1</text><text x="258" y="132" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="326" y="114" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">8</text><text x="326" y="132" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text><text x="54" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">17</text><text x="54" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10</text><text x="122" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">16</text><text x="122" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="190" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">3</text><text x="190" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12 · └</text><text x="258" y="182" 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font-size="19.72" font-weight="700">22</text><text x="190" y="302" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c17</text><text x="258" y="250" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">5</text><text x="258" y="268" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c18</text><text x="326" y="250" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">6</text><text x="326" y="268" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c19</text><text x="54" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">19</text><text x="54" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c20</text><text x="122" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">20</text><text x="122" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c21</text><text x="258" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">23</text><text x="258" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c22</text><text x="326" y="318" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="19.72" font-weight="700">24</text><text x="326" y="336" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c23</text></svg></figure><p>c8 → c7 → c12 → c13 → c18 → c19 → c14 → c9 → c4 → c3 → c2 → c1 → c0 → c5 → c6 → c11 → c10 → c15 → c20 → c21 → c16 → c17 → c22 → c23</p></details></div><h3>推理依据</h3><ul><li>c12 必须上与右拐角</li><li>每步蓝橙交替</li><li>墙 c5—c10 封闭该邻接</li><li>墙 c3—c8 封闭该邻接</li></ul><p>关键分叉:第 3 步应走 c12,诱惑路线走 c6。排除依据:进出方向不符。</p><details><summary>逐项机制必要性反例</summary><p>解除 direction:c12 后:c8 → c7 → c6 → c5 → c0 → c1 → c2 → c3 → c4 → c9 → c14 → c19 → c18 → c13 → c12 → c11 → c10 → c15 → c20 → c21 → c16 → c17 → c22 → c23</p><p>解除 alternation 后:c8 → c9 → c4 → c3 → c2 → c1 → c0 → c5 → c6 → c7 → c12 → c13 → c14 → c19 → c23 → c22 → c18 → c17 → c21 → c20 → c15 → c10 → c11 → c16</p><p>解除 wall:0 后:c8 → c9 → c4 → c3 → c2 → c1 → c0 → c5 → c10 → c15 → c20 → c21 → c16 → c11 → c6 → c7 → c12 → c13 → c14 → c19 → c18 → c17 → c22 → c23</p><p>解除 wall:1 后:c8 → c3 → c4 → c9 → c14 → c19 → c18 → c13 → c12 → c7 → c2 → c1 → c0 → c5 → c6 → c11 → c10 → c15 → c20 → c21 → c16 → c17 → c22 → c23</p></details></article></html> |