Files

1 line
83 KiB
HTML

<!doctype html><html lang="zh-CN"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>方向通道 · 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="play.html">进入试玩</a><h1>方向通道 · 8关设计评审</h1><p>每格一次。通道图形连接哪两条边,就必须从这两边进出:横线只通左右,竖线只通上下,拐角只通图示两边,均可反向。通道格不能是起终点。</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>01 · 入门 · 横向通道:只从左、右进出</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 266.66666666666663" role="img" aria-label="横向通道:只从左、右进出"><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 20,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,133.33333333333331 246.66666666666666,133.33333333333331 246.66666666666666,246.66666666666666 133.33333333333331,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,133.33333333333331 360,133.33333333333331 360,246.66666666666666 246.66666666666666,246.66666666666666" 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"></text><text x="76.66666666666666" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</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">c1</text><text x="303.3333333333333" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</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"></text><text x="303.3333333333333" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</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 0 380 266.66666666666663" role="img" aria-label="横向通道:只从左、右进出"><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 20,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,133.33333333333331 246.66666666666666,133.33333333333331 246.66666666666666,246.66666666666666 133.33333333333331,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,133.33333333333331 360,133.33333333333331 360,246.66666666666666 246.66666666666666,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="303.3333333333333,76.66666666666666 190,76.66666666666666 76.66666666666666,76.66666666666666 76.66666666666666,190 190,190 303.3333333333333,190" 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">3</text><text x="76.66666666666666" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</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">c1 · ─</text><text x="303.3333333333333" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</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">4</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">5</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">6</text><text x="303.3333333333333" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text></svg></figure><p>c2 → c1 → c0 → c3 → c4 → c5</p></details></div><h3>推理依据</h3><ul><li>c1 在第 2 步,必须左右直行</li></ul><p>关键分叉:第 2 步应走 c1,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:c1 后:c2 → c5 → c4 → c1 → c0 → c3</p></details></article><article><h2>02 · 入门 · 拐角通道:认清连接的两条边</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="拐角通道:认清连接的两条边"><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 246.66666666666666,246.66666666666666 133.33333333333331,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,133.33333333333331 360,133.33333333333331 360,246.66666666666666 246.66666666666666,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,246.66666666666666 133.33333333333331,246.66666666666666 133.33333333333331,360 20,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,246.66666666666666 246.66666666666666,246.66666666666666 246.66666666666666,360 133.33333333333331,360" 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">┌</text><text x="76.66666666666666" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</text><text x="190" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</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"></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"></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="拐角通道:认清连接的两条边"><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 246.66666666666666,246.66666666666666 133.33333333333331,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,133.33333333333331 360,133.33333333333331 360,246.66666666666666 246.66666666666666,246.66666666666666" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,246.66666666666666 133.33333333333331,246.66666666666666 133.33333333333331,360 20,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,246.66666666666666 246.66666666666666,246.66666666666666 246.66666666666666,360 133.33333333333331,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="190,76.66666666666666 76.66666666666666,76.66666666666666 76.66666666666666,190 76.66666666666666,303.3333333333333 190,303.3333333333333 190,190 303.3333333333333,190 303.3333333333333,76.66666666666666" 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">2</text><text x="76.66666666666666" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0 · ┌</text><text x="190" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</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">8</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">3</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">6</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">7</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">4</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 → c0 → c3 → c6 → c7 → c4 → c5 → c2</p></details></div><h3>推理依据</h3><ul><li>c0 在第 2 步,必须右与下</li></ul><p>关键分叉:第 2 步应走 c0,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:c0 后:c1 → c2 → c5 → c4 → c7 → c6 → c3 → c0</p></details></article><article><h2>03 · 普通 · 纵向通道:只从上、下进出</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 295" role="img" aria-label="纵向通道:只从上、下进出"><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" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,190 190,190 190,275 105,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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"></text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">│</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</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">c8</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">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 0 380 295" role="img" aria-label="纵向通道:只从上、下进出"><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" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,190 190,190 190,275 105,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="62.5,147.5 62.5,62.5 147.5,62.5 147.5,147.5 147.5,232.5 232.5,232.5 232.5,147.5 232.5,62.5 317.5,62.5 317.5,147.5" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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">3</text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">9</text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5 · │</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">10</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="147.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="147.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="232.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="232.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</text></svg></figure><p>c4 → c0 → c1 → c5 → c8 → c9 → c6 → c2 → c3 → c7</p></details></div><h3>推理依据</h3><ul><li>c5 在第 4 步,必须上下直行</li></ul><p>关键分叉:第 2 步应走 c0,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:c5 后:c4 → c5 → c8 → c9 → c6 → c7 → c3 → c2 → c1 → c0</p></details></article><article><h2>04 · 普通 · 两种拐角配合选路</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 295" role="img" aria-label="两种拐角配合选路"><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" 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="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,190 360,190 360,275 275,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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"></text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="62.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">└</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">┐</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" 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></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 0 380 295" role="img" aria-label="两种拐角配合选路"><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" 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="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,190 360,190 360,275 275,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="62.5,62.5 62.5,147.5 62.5,232.5 147.5,232.5 232.5,232.5 317.5,232.5 317.5,147.5 232.5,147.5 147.5,147.5 147.5,62.5 232.5,62.5 317.5,62.5" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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">10</text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">12</text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</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">c4</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">9</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5 · └</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7 · ┐</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" 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">4</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">5</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">6</text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text></svg></figure><p>c0 → c4 → c8 → c9 → c10 → c11 → c7 → c6 → c5 → c1 → c2 → c3</p></details></div><h3>推理依据</h3><ul><li>c5 在第 9 步,必须上与右</li><li>c7 在第 7 步,必须下与左</li></ul><p>关键分叉:第 2 步应走 c4,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:c5 后:c0 → c1 → c5 → c4 → c8 → c9 → c10 → c11 → c7 → c6 → c2 → c3</p><p>解除 direction:c7 后:c0 → c1 → c5 → c6 → c2 → c3 → c7 → c11 → c10 → c9 → c8 → c4</p></details></article><article><h2>05 · 进阶 · 横、竖、拐角共同排除错误出口</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="横、竖、拐角共同排除错误出口"><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" 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="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,190 360,190 360,275 275,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,275 190,275 190,360 105,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,275 275,275 275,360 190,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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">─</text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="62.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4 · │</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" 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">1</text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</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">c12</text><text x="232.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</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="横、竖、拐角共同排除错误出口"><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" 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="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,190 360,190 360,275 275,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,275 190,275 190,360 105,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,275 275,275 275,360 190,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="317.5,232.5 232.5,232.5 232.5,317.5 147.5,317.5 147.5,232.5 62.5,232.5 62.5,147.5 62.5,62.5 147.5,62.5 232.5,62.5 317.5,62.5 317.5,147.5 232.5,147.5 147.5,147.5" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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">9</text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1 · ─</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">10</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="62.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4 · │</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">14</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">13</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">12</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" 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">5</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">2</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">1</text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="147.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="147.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="232.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="232.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text></svg></figure><p>c11 → c10 → c13 → c12 → c9 → c8 → c4 → c0 → c1 → c2 → c3 → c7 → c6 → c5</p></details></div><h3>推理依据</h3><ul><li>c1 在第 9 步,必须左右直行</li><li>c4 在第 7 步,必须上下直行</li><li>c10 在第 2 步,必须右与下</li></ul><p>关键分叉:第 10 步应走 c2,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:c1 后:c11 → c10 → c13 → c12 → c9 → c8 → c4 → c0 → c1 → c5 → c6 → c2 → c3 → c7</p><p>解除 direction:c4 后:c11 → c10 → c13 → c12 → c9 → c8 → c4 → c5 → c6 → c7 → c3 → c2 → c1 → c0</p><p>解除 direction:c10 后:c11 → c7 → c3 → c2 → c1 → c0 → c4 → c8 → c9 → c5 → c6 → c10 → c13 → c12</p></details></article><article><h2>06 · 进阶 · 通道与绕行区域配合</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="通道与绕行区域配合"><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" 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="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,190 360,190 360,275 275,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,275 105,275 105,360 20,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,275 190,275 190,360 105,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,275 275,275 275,360 190,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,275 360,275 360,360 275,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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"></text><text x="147.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">┌</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">│</text><text x="62.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" 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 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">c13</text><text x="232.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="232.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="317.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="317.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c15</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="通道与绕行区域配合"><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" 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="190,190 275,190 275,275 190,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,190 360,190 360,275 275,275" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,275 105,275 105,360 20,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,275 190,275 190,360 105,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,275 275,275 275,360 190,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,275 360,275 360,360 275,360" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="62.5,232.5 62.5,147.5 62.5,62.5 147.5,62.5 147.5,147.5 147.5,232.5 232.5,232.5 232.5,147.5 232.5,62.5 317.5,62.5 317.5,147.5 317.5,232.5 317.5,317.5 232.5,317.5 147.5,317.5 62.5,317.5" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="62.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="62.5" y="72.5" text-anchor="middle" font-family="system-ui" 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="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">9</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2 · ┌</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">10</text><text x="317.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</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">c4 · │</text><text x="147.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="317.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="317.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="62.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="62.5" y="242.5" text-anchor="middle" font-family="system-ui" 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">6</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">7</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">12</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">16</text><text x="62.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="147.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">15</text><text x="147.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13 · ─</text><text x="232.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">14</text><text x="232.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="317.5" y="309.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">13</text><text x="317.5" y="327.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c15</text></svg></figure><p>c8 → c4 → c0 → c1 → c5 → c9 → c10 → c6 → c2 → c3 → c7 → c11 → c15 → c14 → c13 → c12</p></details></div><h3>推理依据</h3><ul><li>c2 在第 9 步,必须右与下</li><li>c4 在第 2 步,必须上下直行</li><li>c13 在第 15 步,必须左右直行</li></ul><p>关键分叉:第 5 步应走 c5,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:c2 后:c8 → c4 → c0 → c1 → c2 → c3 → c7 → c6 → c5 → c9 → c10 → c11 → c15 → c14 → c13 → c12</p><p>解除 direction:c4 后:c8 → c12 → c13 → c14 → c15 → c11 → c7 → c3 → c2 → c6 → c10 → c9 → c5 → c1 → c0 → c4</p><p>解除 direction:c13 后:c8 → c4 → c0 → c1 → c5 → c6 → c2 → c3 → c7 → c11 → c15 → c14 → c10 → c9 → c13 → c12</p></details></article><article><h2>07 · 难 · 横竖与多个拐角跨区域配合</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="横竖与多个拐角跨区域配合"><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" stroke-width="2"/><polygon points="266,102 348,102 348,184 266,184" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,184 102,184 102,266 20,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,184 184,184 184,266 102,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,184 266,184 266,266 184,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,184 348,184 348,266 266,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,266 102,266 102,348 20,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,266 184,266 184,348 102,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,266 266,266 266,348 184,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,266 348,266 348,348 266,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,348 184,348 184,430 102,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,348 266,348 266,430 184,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="61" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="61" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</text><text x="143" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="143" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="225" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">─</text><text x="225" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="307" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="307" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="61" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">┌</text><text x="61" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="143" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="143" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="225" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="307" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">│</text><text x="307" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="61" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="61" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="143" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">┌</text><text x="143" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</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">c10</text><text x="307" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="307" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="61" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="61" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="143" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="143" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text><text x="225" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="307" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="307" y="317" 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"></text><text x="143" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c16</text><text x="225" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c17</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 0 368 450" role="img" aria-label="横竖与多个拐角跨区域配合"><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" stroke-width="2"/><polygon points="266,102 348,102 348,184 266,184" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,184 102,184 102,266 20,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,184 184,184 184,266 102,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,184 266,184 266,266 184,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,184 348,184 348,266 266,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,266 102,266 102,348 20,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,266 184,266 184,348 102,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,266 266,266 266,348 184,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,266 348,266 348,348 266,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,348 184,348 184,430 102,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,348 266,348 266,430 184,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="61,61 143,61 225,61 307,61 307,143 307,225 307,307 225,307 225,389 143,389 143,307 143,225 225,225 225,143 143,143 61,143 61,225 61,307" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="61" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="61" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</text><text x="143" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="143" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="225" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="225" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2 · ─</text><text x="307" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="307" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="61" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">16</text><text x="61" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4 · ┌</text><text x="143" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">15</text><text x="143" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="225" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">14</text><text x="225" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="307" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="307" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7 · │</text><text x="61" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">17</text><text x="61" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="143" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">12</text><text x="143" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9 · ┌</text><text x="225" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">13</text><text x="225" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10</text><text x="307" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="307" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="61" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">18</text><text x="61" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="143" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="143" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text><text x="225" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="225" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="307" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="307" y="317" 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><text x="225" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">9</text><text x="225" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c17</text></svg></figure><p>c0 → c1 → c2 → c3 → c7 → c11 → c15 → c14 → c17 → c16 → c13 → c9 → c10 → c6 → c5 → c4 → c8 → c12</p></details></div><h3>推理依据</h3><ul><li>c2 在第 3 步,必须左右直行</li><li>c4 在第 16 步,必须右与下</li><li>c7 在第 5 步,必须上下直行</li><li>c9 在第 12 步,必须右与下</li></ul><p>关键分叉:第 3 步应走 c2,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:c0 → c1 → c5 → c4 → c8 → c12 → c13 → c9 → c10 → c6 → c2 → c3 → c7 → c11 → c15 → c14 → c17 → c16</p><p>解除 direction:c4 后:c0 → c4 → c8 → c12 → c13 → c9 → c10 → c6 → c5 → c1 → c2 → c3 → c7 → c11 → c15 → c14 → c17 → c16</p><p>解除 direction:c7 后:c0 → c1 → c2 → c3 → c7 → c6 → c5 → c4 → c8 → c12 → c13 → c9 → c10 → c11 → c15 → c14 → c17 → c16</p><p>解除 direction:c9 后:c0 → c1 → c2 → c3 → c7 → c11 → c15 → c14 → c17 → c16 → c13 → c12 → c8 → c4 → c5 → c6 → c10 → c9</p></details></article><article><h2>08 · 难 · 起点未知:由通道反推完整路线</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="起点未知:由通道反推完整路线"><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" stroke-width="2"/><polygon points="266,102 348,102 348,184 266,184" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,184 102,184 102,266 20,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,184 184,184 184,266 102,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,184 266,184 266,266 184,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,184 348,184 348,266 266,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,266 102,266 102,348 20,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,266 184,266 184,348 102,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,266 266,266 266,348 184,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,266 348,266 348,348 266,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,348 102,348 102,430 20,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,348 184,348 184,430 102,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,348 266,348 266,430 184,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><text x="61" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="61" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</text><text x="143" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">─</text><text x="143" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1</text><text x="225" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="307" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="307" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="61" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">14</text><text x="61" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="143" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="143" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="225" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="307" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="307" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="61" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="61" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="143" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">│</text><text x="143" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9</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">c10</text><text x="307" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="307" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="61" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="61" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="143" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="143" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text><text x="225" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="225" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="307" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="307" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c15</text><text x="61" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">└</text><text x="61" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c16</text><text x="143" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700"></text><text x="143" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c17</text><text x="225" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">┘</text><text x="225" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c18</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 0 368 450" role="img" aria-label="起点未知:由通道反推完整路线"><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" stroke-width="2"/><polygon points="266,102 348,102 348,184 266,184" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,184 102,184 102,266 20,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,184 184,184 184,266 102,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,184 266,184 266,266 184,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,184 348,184 348,266 266,266" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,266 102,266 102,348 20,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,266 184,266 184,348 102,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,266 266,266 266,348 184,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="266,266 348,266 348,348 266,348" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,348 102,348 102,430 20,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,348 184,348 184,430 102,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polygon points="184,348 266,348 266,430 184,430" fill="#f1eef9" stroke="#aaa1c7" stroke-width="2"/><polyline points="143,307 143,225 143,143 225,143 225,225 307,225 307,307 225,307 225,389 143,389 61,389 61,307 61,225 61,143 61,61 143,61 225,61 307,61 307,143" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="61" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">15</text><text x="61" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</text><text x="143" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">16</text><text x="143" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1 · ─</text><text x="225" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">17</text><text x="225" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2</text><text x="307" y="53" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">18</text><text x="307" y="71" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c3</text><text x="61" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">14</text><text x="61" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</text><text x="143" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">3</text><text x="143" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5</text><text x="225" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="225" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6</text><text x="307" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">19</text><text x="307" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7</text><text x="61" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">13</text><text x="61" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8</text><text x="143" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</text><text x="143" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c9 · │</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">c10</text><text x="307" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="307" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c11</text><text x="61" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">12</text><text x="61" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12</text><text x="143" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="143" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c13</text><text x="225" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="225" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14</text><text x="307" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="307" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c15</text><text x="61" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">11</text><text x="61" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c16 · └</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">c17</text><text x="225" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">9</text><text x="225" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c18 · ┘</text></svg></figure><p>c13 → c9 → c5 → c6 → c10 → c11 → c15 → c14 → c18 → c17 → c16 → c12 → c8 → c4 → c0 → c1 → c2 → c3 → c7</p></details></div><h3>推理依据</h3><ul><li>c1 在第 16 步,必须左右直行</li><li>c9 在第 2 步,必须上下直行</li><li>c16 在第 11 步,必须上与右</li><li>c18 在第 9 步,必须左与上</li></ul><p>关键分叉:第 1 步应走 c13,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:c2 → c3 → c7 → c6 → c10 → c11 → c15 → c14 → c18 → c17 → c16 → c12 → c8 → c4 → c0 → c1 → c5 → c9 → c13</p><p>解除 direction:c9 后:c0 → c1 → c2 → c3 → c7 → c11 → c15 → c14 → c18 → c17 → c16 → c12 → c8 → c4 → c5 → c6 → c10 → c9 → c13</p><p>解除 direction:c16 后:c16 → c17 → c18 → c14 → c15 → c11 → c10 → c6 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c9 → c13 → c12 → c8</p><p>解除 direction:c18 后:c5 → c9 → c13 → c14 → c15 → c11 → c10 → c6 → c7 → c3 → c2 → c1 → c0 → c4 → c8 → c12 → c16 → c17 → c18</p></details></article></html>