01 · 入门 · 认识共边上的永久墙
展开作者解与路线
c2 → c5 → c4 → c3 → c0 → c1
推理依据
- 永久墙 c1—c2 断开表面邻接，需绕行
关键分叉：第 2 步应走 c5，诱惑路线走 c1。排除依据：永久墙不能穿过。
逐项机制必要性反例
解除 wall:0 后：c2 → c1 → c0 → c3 → c4 → c5
每格一次，数字必须踩在对应步。黑黄墙封住两格之间的一条共边，整局不会打开，必须绕开。墙不占格，也不是开关。
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。
c2 → c5 → c4 → c3 → c0 → c1
关键分叉：第 2 步应走 c5，诱惑路线走 c1。排除依据：永久墙不能穿过。
解除 wall:0 后：c2 → c1 → c0 → c3 → c4 → c5
c2 → c5 → c4 → c1 → c0 → c3 → c6 → c7
关键分叉：第 4 步应走 c1，诱惑路线走 c7。排除依据：永久墙不能穿过。
解除 wall:0 后：c2 → c5 → c4 → c7 → c6 → c3 → c0 → c1
c7 → c3 → c2 → c1 → c0 → c4 → c5 → c8 → c9 → c6
关键分叉：第 2 步应走 c3，诱惑路线走 c6。排除依据：永久墙不能穿过。
解除 wall:0 后：c7 → c6 → c9 → c8 → c5 → c4 → c0 → c1 → c2 → c3
解除 wall:1 后：c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6 → c9 → c8
c0 → c4 → c8 → c9 → c5 → c1 → c2 → c3 → c7 → c6 → c10 → c11
关键分叉：第 5 步应走 c5，诱惑路线走 c10。排除依据：永久墙不能穿过。
解除 wall:0 后：c0 → c4 → c8 → c9 → c10 → c11 → c7 → c3 → c2 → c6 → c5 → c1
解除 wall:1 后：c0 → c1 → c5 → c4 → c8 → c9 → c10 → c11 → c7 → c6 → c2 → c3
c11 → c7 → c3 → c2 → c6 → c10 → c13 → c12 → c9 → c8 → c4 → c0 → c1 → c5
关键分叉：第 5 步应走 c6，诱惑路线走 c1。排除依据：永久墙不能穿过。
解除 wall:0 后：c11 → c7 → c3 → c2 → c1 → c0 → c4 → c8 → c9 → c12 → c13 → c10 → c6 → c5
解除 wall:1 后：c11 → c7 → c3 → c2 → c6 → c10 → c13 → c12 → c9 → c5 → c1 → c0 → c4 → c8
解除 wall:2 后：c11 → c7 → c3 → c2 → c6 → c10 → c13 → c12 → c9 → c8 → c4 → c5 → c1 → c0
c12 → c13 → c14 → c15 → c11 → c10 → c9 → c8 → c4 → c0 → c1 → c5 → c6 → c2 → c3 → c7
关键分叉：第 4 步应走 c15，诱惑路线走 c10。排除依据：永久墙不能穿过。
解除 wall:0 后：c12 → c13 → c14 → c10 → c6 → c5 → c9 → c8 → c4 → c0 → c1 → c2 → c3 → c7 → c11 → c15
解除 wall:1 后：c12 → c8 → c9 → c13 → c14 → c10 → c6 → c5 → c4 → c0 → c1 → c2 → c3 → c7 → c11 → c15
解除 wall:2 后：c12 → c13 → c14 → c15 → c11 → c10 → c9 → c8 → c4 → c0 → c1 → c5 → c6 → c7 → c3 → c2
c17 → c16 → c13 → c14 → c15 → c11 → c7 → c3 → c2 → c6 → c10 → c9 → c5 → c1 → c0 → c4 → c8 → c12
关键分叉：第 10 步应走 c6，诱惑路线走 c1。排除依据：永久墙不能穿过。
解除 wall:0 后：c17 → c16 → c13 → c14 → c15 → c11 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6 → c10 → c9 → c8 → c12
解除 wall:1 后：c17 → c16 → c13 → c14 → c15 → c11 → c10 → c9 → c5 → c6 → c7 → c3 → c2 → c1 → c0 → c4 → c8 → c12
解除 wall:2 后：c17 → c16 → c13 → c12 → c8 → c4 → c0 → c1 → c5 → c9 → c10 → c6 → c2 → c3 → c7 → c11 → c15 → c14
解除 wall:3 后：c17 → c16 → c13 → c9 → c5 → c6 → c10 → c14 → c15 → c11 → c7 → c3 → c2 → c1 → c0 → c4 → c8 → c12
c10 → c6 → c5 → c4 → c0 → c1 → c2 → c3 → c7 → c11 → c15 → c14 → c13 → c9 → c8 → c12 → c16 → c17 → c18
关键分叉：第 1 步应走 c10，诱惑路线走 c0。排除依据：永久墙不能穿过。
解除 wall:0 后：c0 → c1 → c2 → c3 → c7 → c6 → c10 → c11 → c15 → c14 → c18 → c17 → c13 → c9 → c5 → c4 → c8 → c12 → c16
解除 wall:1 后：c0 → c1 → c2 → c3 → c7 → c11 → c15 → c14 → c18 → c17 → c16 → c12 → c13 → c9 → c8 → c4 → c5 → c6 → c10
解除 wall:2 后：c15 → c11 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6 → c10 → c14 → c13 → c9 → c8 → c12 → c16 → c17 → c18
解除 wall:3 后：c15 → c11 → c7 → c3 → c2 → c1 → c0 → c4 → c5 → c6 → c10 → c9 → c13 → c14 → c18 → c17 → c16 → c12 → c8