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d6
3步杀：车到c1 (e1)
3步杀：后到g4 (d4)
3步杀：兵到e6 (f5)
3步杀：后到b4
3步杀：车到h7 (h3)
3步杀：王到b1
3步杀：兵到f4 (e3)
2步杀：象到f3 (d1)
3步杀：后到d7 (c7·3)
3步杀：后到c8 (c7)
3步杀：后到b8
3步杀：后到e8 (c6)
3步杀：后到f4 (c1)
3步杀：后到f4 (e4)
3步杀：后到e7 (c5)
3步杀：车到c6
3步杀：后到d3
3步杀：车到g6 (g4)
攻击未易位的王：兵到b3 (a2·33)
3步杀：车到e7 (b7)
2步杀：车到h8 (h1·3)
3步杀：车到c4
攻击未易位的王：后到f5 (h3·6)
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