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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>双色交替 · 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>双色交替 · 8关设计评审</h1><p>蓝格 → 橙格 → 蓝格,每一步换颜色。整块只算一步,每块一次;共享边界但颜色相同也不能走。○是蓝格,△是橙格。</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 · 蓝橙交替,整块一步</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="蓝橙交替,整块一步"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 133.33333333333331,133.33333333333331" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 360,20 360,133.33333333333331 246.66666666666666,133.33333333333331" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,133.33333333333331 133.33333333333331,133.33333333333331 133.33333333333331,246.66666666666666 20,246.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,133.33333333333331 246.66666666666666,133.33333333333331 246.66666666666666,246.66666666666666 133.33333333333331,246.66666666666666" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,133.33333333333331 360,133.33333333333331 360,246.66666666666666 246.66666666666666,246.66666666666666" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,246.66666666666666 133.33333333333331,246.66666666666666 133.33333333333331,360 20,360" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,246.66666666666666 246.66666666666666,246.66666666666666 246.66666666666666,360 133.33333333333331,360" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><text x="133.33333333333331" y="68.66666666666666" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">△</text><text x="133.33333333333331" y="86.66666666666666" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</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">c1</text><text x="76.66666666666666" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="76.66666666666666" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2 · ○</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">c3</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">c4</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">c5</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">c6</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="蓝橙交替,整块一步"><polygon points="20,20 133.33333333333331,20 133.33333333333331,133.33333333333331 20,133.33333333333331" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="133.33333333333331,20 246.66666666666666,20 246.66666666666666,133.33333333333331 133.33333333333331,133.33333333333331" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="246.66666666666666,20 360,20 360,133.33333333333331 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font-weight="700">1</text><text x="76.66666666666666" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c2 · ○</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">c3 · ○</text><text x="303.3333333333333" y="182" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</text><text x="303.3333333333333" y="200" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4 · △</text><text x="76.66666666666666" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="76.66666666666666" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5 · ○</text><text x="190" y="295.3333333333333" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="190" y="313.3333333333333" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c6 · △</text></svg></figure><p>c2 → c0 → c1 → c4 → c3 → c6 → c5</p></details></div><h3>推理依据</h3><ul><li>○/△每步交替,按节点数量推断端点类别</li></ul><p>关键分叉:第 2 步应走 c0,诱惑路线走 c5。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 → c5 → c6 → c3 → c0 → c1 → c4</p></details></article><article><h2>02 · 入门 · 大格旁同色相邻也不能走</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 295" role="img" aria-label="大格旁同色相邻也不能走"><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="#64acf3" 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" 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font-weight="700">6</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="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">c8 · ○</text></svg></figure><p>c1 → c2 → c6 → c5 → c8 → c7 → c4 → c3 → c0</p></details></div><h3>推理依据</h3><ul><li>○/△每步交替,按节点数量推断端点类别</li></ul><p>关键分叉:第 8 步应走 c3,诱惑路线走 c0。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 → c2 → c6 → c5 → c8 → c7 → c4 → c0 → c3</p></details></article><article><h2>03 · 普通 · 颜色数量决定两端颜色</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 295" role="img" aria-label="颜色数量决定两端颜色"><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" 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275,275" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polyline points="147.5,147.5 147.5,232.5 62.5,232.5 62.5,147.5 105,62.5 232.5,62.5 232.5,147.5 232.5,232.5 317.5,232.5 317.5,147.5 317.5,62.5" fill="none" stroke="#7963c9" stroke-width="5" opacity=".4"/><text x="105" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="105" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0 · ○</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">6</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1 · △</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">c2 · ○</text><text x="62.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">4</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">1</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4 · ○</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">c5 · ○</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">c6 · △</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">c7 · ○</text><text x="147.5" y="224.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">2</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">8</text><text x="232.5" 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">9</text><text x="317.5" y="242.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c10 · ○</text></svg></figure><p>c4 → c8 → c7 → c3 → c0 → c1 → c5 → c9 → c10 → c6 → c2</p></details></div><h3>推理依据</h3><ul><li>○/△每步交替,按节点数量推断端点类别</li></ul><p>关键分叉:第 2 步应走 c8,诱惑路线走 c0。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 → c0 → c3 → c7 → c8 → c9 → c5 → c1 → c2 → c6 → c10</p></details></article><article><h2>04 · 普通 · 大格多出口中选择另一种颜色</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="大格多出口中选择另一种颜色"><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="#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="20,105 105,105 105,190 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="#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="105,190 190,190 190,275 105,275" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,190 275,190 275,275 190,275" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="275,190 360,190 360,275 275,275" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="105,275 190,275 190,360 105,360" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="190,275 275,275 275,360 190,360" fill="#ffae55" stroke="#aaa1c7" stroke-width="2"/><text x="105" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">△</text><text x="105" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c0</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">c1</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">c2</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">c3</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">c4</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5 · ○</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">c6</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">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><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">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="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">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="大格多出口中选择另一种颜色"><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="#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="20,105 105,105 105,190 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="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,190 105,190 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font-size="10" fill="#665c78">c0 · △</text><text x="232.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">7</text><text x="232.5" y="72.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c1 · ○</text><text x="317.5" y="54.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="317.5" y="72.5" 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">5</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">2</text><text x="147.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4 · △</text><text x="232.5" y="139.5" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">1</text><text x="232.5" y="157.5" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5 · ○</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">c6 · ○</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">c7 · △</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">c8 · ○</text><text x="232.5" y="224.5" 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→ c2 → c6 → c10 → c9 → c12 → c11</p></details></div><h3>推理依据</h3><ul><li>○/△每步交替,按节点数量推断端点类别</li></ul><p>关键分叉:第 2 步应走 c4,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 → c1 → c2 → c6 → c10 → c9 → c12 → c11 → c8 → c7 → c3 → c0 → c4</p></details></article><article><h2>05 · 进阶 · 异形凹口与双色交替配合</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 380 380" role="img" aria-label="异形凹口与双色交替配合"><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="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,105 105,105 105,190 20,190" 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="105,105 190,105 190,190 105,190" 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text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">5</text><text x="225" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c14 · ○</text></svg></figure><p>c7 → c8 → c12 → c11 → c14 → c13 → c10 → c9 → c5 → c0 → c1 → c2 → c4 → c3 → c6</p></details></div><h3>推理依据</h3><ul><li>○/△每步交替,按节点数量推断端点类别</li></ul><p>关键分叉:第 10 步应走 c0,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:c7 → c8 → c12 → c11 → c14 → c13 → c10 → c9 → c5 → c6 → c3 → c0 → c1 → c2 → c4</p></details></article><article><h2>07 · 难 · 多个大格与异形共同推理</h2><div class="boards"><figure><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 368 450" role="img" aria-label="多个大格与异形共同推理"><polygon points="20,20 102,20 102,102 20,102" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="102,20 184,20 184,102 102,102" fill="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,102 102,102 102,184 20,184" 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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">c1</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">c2</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">c3</text><text x="266" y="135" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">△</text><text x="266" y="153" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c4</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">c5</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">c6</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">c7</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">c8</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">c9</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">c10 · ○</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">c11</text><text x="307" y="299" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">14</text><text x="307" y="317" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c12 · △</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">c13</text><text 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△</text><text x="61" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">8</text><text x="61" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c5 · △</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">c6 · △</text><text x="225" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">16</text><text x="225" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c7 · △</text><text x="307" y="217" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">15</text><text x="307" y="235" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c8 · ○</text><text x="61" y="299" text-anchor="middle" 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c15</p></details></article><article><h2>08 · 难 · 起点未知:从颜色与区域推断路线</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:从颜色与区域推断路线"><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="#ffae55" stroke="#aaa1c7" stroke-width="2"/><polygon points="20,102 102,102 102,184 20,184" fill="#ffae55" 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="102,102 184,102 184,184 102,184" fill="#64acf3" 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="#64acf3" stroke="#aaa1c7" stroke-width="2"/><polygon 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fill="#665c78">c13 · ○</text><text x="143" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">12</text><text x="143" y="399" 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">15</text><text x="225" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c15 · ○</text><text x="307" y="381" text-anchor="middle" font-family="system-ui,Microsoft YaHei" font-size="21" font-weight="700">16</text><text x="307" y="399" text-anchor="middle" font-family="system-ui" font-size="10" fill="#665c78">c16 · △</text></svg></figure><p>c2 → c1 → c4 → c8 → c7 → c6 → c3 → c0 → c5 → c9 → c13 → c14 → c10 → c11 → c15 → c16 → c12</p></details></div><h3>推理依据</h3><ul><li>○/△每步交替,按节点数量推断端点类别</li></ul><p>关键分叉:第 1 步应走 c2,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:c1 → c2 → c4 → c8 → c7 → c6 → c3 → c0 → c5 → c9 → c13 → c14 → c10 → c11 → c15 → c16 → c12</p></details></article></html>