Chess960 战术题：护卫后杀
皇后贴脸将杀，身后有自己人保护。
3268 道题
3步杀：后到f5 (d7)
3步杀：车到f1 (a1)
3步杀：后到a7 (d4·2)
3步杀：后到a8 (c6)
3步杀：车到c8 (c5)
攻击未易位的王：后到d7 (d4·6)
3步杀：马到d7 (f8)
3步杀：后到f5 (d3)
3步杀：车到g7 (f7)
3步杀：兵到f7
3步杀：后到a8 (g2)
3步杀：兵到f7 (f6)
3步杀：车到f8 (f3·3)
3步杀：后到g7 (g3)
3步杀：马到e6 (c7)
3步杀：王到f2
3步杀：象到a6 (e2)
3步杀：后到f8 (h8)
3步杀：后到g5 (h4)
3步杀：兵到g7 (f6)
3步杀：兵到f7 (f6·2)
3步杀：马到e6 (d4)
攻击未易位的王：车到b8 (b6)
攻击未易位的王：后到e4 (b1·12)
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