PID: 68342 (7n/5B1K/Q2N4/1P2k1P1/5rrp/4P1p1/1p3pP1/BN6 w - - 0 1)
Hay, RR
Chess, 1949
#3
10 + 8
SOLUTION
SOUND
Sets
1...Rf3
2.Bxb2+
2...Rd4
3.Bxd4#
1...Re4
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
1...Rf5
2.Bxb2+
2...Rd4
3.Bxd4#
1...Rf6
2.Bxb2+
2...Rd4
3.Bxd4#
1...Rxg5
2.Bxb2+
2...Rd4
3.Bxd4#
Keys
1.Sc3!
threat
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
3.Qf6#
2.Sf5
threat
3.Qe6#
3.Qf6#
2...Kxf5
3.Qf6#
1...Rxf7+
2.Sxf7+
2...Kf5
3.Qc8#
3.Qf6#
2...Sxf7
3.Qf6#
1...b1Q+
2.Sce4+
2...Qxa1
3.Qxa1#
2...Qb2
3.Bxb2#
1...Rxg5
2.Sc4+
2...Kf5
3.Qe6#
2...Rxc4
3.Qe6#
1...Sxf7
2.Sc4+
2...Kf5
3.Qf6#
3.Qg6#
2...Rxc4
3.Qf6#
1...bxa1Q
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
3.Qf6#
1...bxa1R
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
3.Qf6#
1...f1Q
2.Sf5
threat
3.Qe6#
3.Qf6#
2...Kxf5
3.Qf6#
1...f1B
2.Sf5
threat
3.Qe6#
3.Qf6#
2...Kxf5
3.Qf6#
1...f1R
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
2.Sf5
threat
3.Qe6#
3.Qf6#
2...Kxf5
3.Qf6#
1...Rf3
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
1...Ra4
2.Sc4+
2...Kf5
3.Qf6#
2...Raxc4
3.Qe6#
3.Qf6#
2...Rgxc4
3.Qe6#
3.Qf6#
1...Rb4
2.Sc4+
2...Kf5
3.Qf6#
2...Rbxc4
3.Qe6#
3.Qf6#
2...Rgxc4
3.Qe6#
3.Qf6#
2.Sde4
threat
3.Qe6#
3.Qf6#
2...Kf5
3.Qe6#
3.Qf6#
2.Sf5
threat
3.Qe6#
3.Qf6#
2...Kxf5
3.Qf6#
1...Rc4
2.Sxc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
3.Qf6#
1...Rd4
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
3.Qf6#
1...Re4
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
3.Qf6#
2.Sdxe4
threat
3.Qe6#
3.Qf6#
2...Kf5
3.Qe6#
3.Qf6#
2.Sb7
threat
3.Qe6#
3.Qf6#
2...Kf5
3.Qf6#
2.Sc8
threat
3.Qe6#
3.Qf6#
2...Kf5
3.Qf6#
2.Se8
threat
3.Qe6#
3.Qf6#
2...Kf5
3.Qf6#
1...Rf5
2.Sc4+
2...Rxc4
3.Qe6#
2.Sxf5
threat
3.Qe6#
3.Qf6#
2...Kxf5
3.Qf6#
1...Rf6
2.Sc4+
2...Kf5
3.Qxf6#
2...Rxc4
3.Qxf6#
1...Sg6
2.Sc4+
2...Kf5
3.Qf6#
3.Qxg6#
2...Rxc4
3.Qe6#
3.Qf6#
1...h3
2.Sc4+
2...Kf5
3.Qf6#
2...Rxc4
3.Qe6#
3.Qf6#
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