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f4 (g4·2)
3步杀：后到d8 (e8)
3步杀：车到e1 (h1)
3步杀：车到e7 (e1·5)
3步杀：象到c3 (d2)
3步杀：兵到g6 (g5)
3步杀：象到f2
3步杀：车到d1 (e1)
3步杀：兵到a4
3步杀：车到b5
攻击未易位的王：后到e6 (e4·5)
2步杀：车到g7 (c7·2)
3步杀：王到h1 (g1)
3步杀：车到d5 (d1)
3步杀：王到a1
2步杀：后到d5 (b3)
2步杀：王到g1 (f1)
3步杀：兵到d6 (c5)
攻击未易位的王：后到e6 (e2·4)
2步杀：车到e7 (e3)
3步杀：后到e8 (f8)
3步杀：车到g8 (g6)
3步杀：后到b2 (b4)
3步杀：车到c7 (c4)
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