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b6 (e6)
3步杀：王到c2 (b1)
3步杀：马到d5 (e7)
3步杀：后到f5 (f7)
3步杀：马到d7 (f6)
3步杀：后到h6 (g6)
3步杀：后到b6 (d6)
3步杀：后到c7 (a7·2)
3步杀：车到h7 (h8)
3步杀：车到h8 (h6)
3步杀：车到e8 (e2·4)
2步杀：车到d7 (d6·5)
3步杀：象到b3 (d1)
3步杀：兵到e8 (f7)
3步杀：后到d7 (c6)
3步杀：后到f7 (f2)
3步杀：车到d7 (d1·2)
3步杀：车到d7 (f7)
3步杀：马到f7 (d6)
3步杀：象到e5 (c3)
3步杀：后到c8 (e6)
3步杀：车到b3 (d3)
3步杀：后到f7 (f6)
3步杀：后到c3 (a1)
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