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：象到g5 (e3)
3步杀：马到e6 (g5·7)
3步杀：后到b7 (f7)
3步杀：车到d5 (c5·2)
攻击未易位的王：后到c6 (a4·5)
3步杀：车到c2 (c1·2)
3步杀：后到d5 (e4·3)
3步杀：兵到g5 (g4·7)
3步杀：马到a5 (c4)
3步杀：马到f5 (e3·4)
3步杀：车到a8 (a1·3)
3步杀：马到c5 (e4·2)
3步杀：车到h7 (h1·7)
3步杀：车到e7 (g7·2)
3步杀：后到c8 (c7·4)
3步杀：后到b6 (e3·3)
3步杀：车到g8 (f8)
3步杀：王到d1 (c1)
3步杀：后到f6 (c3)
3步杀：车到b7 (b1·8)
3步杀：后到f1 (c1)
2步杀：捉双，e7
2步杀：兵到f5 (f4·2)
攻击未易位的王：马到h6 (f5·5)
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