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：车到b4 (b3)
3步杀：后到d6 (d5)
攻击未易位的王：后到d8 (d2·5)
3步杀：车到f6 (f1·4)
2步杀：车到f2 (a2)
3步杀：后到f6 (a1·2)
3步杀：车到g8 (h8)
3步杀：后到f6 (g5·3)
3步杀：车到f8 (f1·3)
2步杀：象到f6 (e5·4)
3步杀：兵到b7 (a6·5)
1步杀：车到h7 (h4)
2步杀：双重攻击，f8
2步杀：车到b6 (b7)
3步杀：车到g7 (g4·2)
1步杀：车到h1 (h2·2)
2步杀：马到c5 (d7)
2步杀：马到d6 (e4·2)
2步杀：车到f8 (f5·2)
2步杀：车到c8 (c6·3)
2步杀：车到a7 (a3)
2步杀：车到c8 (c7·7)
2步杀：马到h6 (f7·4)
2步杀：后到f7 (f3·9)
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