Chess960 战术题：天梯杀
两个重子一线一线地推进，切断所有退路。
1518 道题
3步杀：后到f5 (f7·2)
3步杀：后到d6 (c6·2)
3步杀：后到e5 (a1·2)
3步杀：马到h6 (g4·4)
3步杀：后到d6 (b8)
3步杀：车到c7 (c1·2)
3步杀：后到f6 (a1·3)
3步杀：后到e6 (c4·4)
3步杀：马到b7 (a5·2)
3步杀：后到d8 (c7·2)
3步杀：车到e7 (e5·3)
3步杀：后到a5 (d2·4)
3步杀：车到b2
3步杀：兵到c8 (c7)
3步杀：兵到e8 (f7·3)
3步杀：马到b5 (a7)
3步杀：兵到e4 (f3)
3步杀：后到c5 (g1·2)
攻击未易位的王：马到h6 (g4·4)
3步杀：后到f6 (f2·4)
3步杀：后到d5 (d3·2)
攻击未易位的王：兵到c7 (b6·5)
3步杀：车到b7 (b4)
3步杀：车到b1 (c1·3)
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