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：马到e3 (d5)
3步杀：后到b6 (b5)
3步杀：车到b5 (c5)
3步杀：王到h1 (h2)
3步杀：兵到f8 (f7·2)
3步杀：后到e7 (h4·5)
3步杀：后到c6 (b6·3)
3步杀：后到d7 (d5·2)
3步杀：车到a3 (c3)
3步杀：车到g7 (g1·3)
3步杀：象到b7
3步杀：后到f8 (h8·2)
3步杀：后到b7 (e4)
3步杀：车到h3 (f3)
3步杀：兵到f7 (e6·2)
3步杀：后到h8 (e5)
3步杀：后到b5 (h5)
3步杀：车到h2 (h1·2)
3步杀：后到e5 (e8)
3步杀：后到c5 (f8·3)
攻击未易位的王：王到h2 (g1·9)
3步杀：后到e5 (d4·3)
3步杀：后到d5 (b3)
3步杀：车到f7 (f3)
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