MESON Chess Problem Database
Problem Display
PID: 23510 (2K5/2p1p3/4P2Q/k1BR4/1pBpbp2/1P4b1/2P5/3N4 w - - 0 1)
Anderson, Gerald Frank
HM., The Observer, 1963
#3
9 + 8
| 56 | The Problemist | 2003 |
| 136 | Problem Observer | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bf2
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bh4
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bh1
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bxc2
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Ba7+
- 1...Bg2
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bd3
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bf3
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bg6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bh7
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...d3
- 2.Qg7
- threat
- 3.Qa1#
- threat
- 2.Qh8
- threat
- 3.Qa1#
- threat
- 2.Qg7
- 1...f3
- 2.Qc1
- threat
- 3.Qa1#
- threat
- 2.Qc1
- 1...c6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Rd7
- threat
- 3.Ra7#
- threat
- 2.Kb7
- 1...Be1
- Tries
- 1.Bd6+?
- 1...Bxd5
- 2.Bxc7#
- 1...c5
- 2.Bc7#
- 1...Kb6!
- 1...Bxd5
- 1.Ba7+?
- 1...c5
- 2.Rxc5#
- 1...Bxd5!
- 1...c5
- 1.Qg5?
- 1...Bxc2
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Ba7+
- 1...Bxd5
- 2.Qxd5
- threat
- 3.Qa8#
- 2...c6
- 3.Qd8#
- threat
- 2.Qxd5
- 1...Be1
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qxe7
- threat
- 3.Qxc7#
- 2...c6
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Qe5
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bf2
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qxe7
- threat
- 3.Qxc7#
- 2...c6
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Qe5
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bh4
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qe5
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bh1
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bg2
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bd3
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bf3
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qxe7
- threat
- 3.Qxc7#
- 2...c6
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Qe5
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bg6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bh7
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...d3
- 2.Qe5
- threat
- 3.Qa1#
- 3.Qxc7#
- threat
- 2.Qg7
- threat
- 3.Qa1#
- threat
- 2.Qe5
- 1...f3
- 2.Qc1
- threat
- 3.Qa1#
- threat
- 2.Qxg3
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Qc1
- 1...c6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Rd7
- threat
- 3.Ra7#
- threat
- 2.Qxe7
- threat
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Kb7
- 1...Bh2!
- 1...Bxc2
- 1.Qg7?
- threat
- 2.Qxd4
- threat
- 3.Bb6#
- 3.Qa1#
- threat
- 2.Qxd4
- 1...Bxc2
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Ba7+
- 1...Bf2
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qe5
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Qxe7
- threat
- 3.Qxc7#
- 2...c6
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bd3
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bxd5!
- threat
- 1.Qh4?
- 1...Bxh4
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bxc2
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Ba7+
- 1...Bh2
- 2.Qe1
- threat
- 3.Qxb4#
- threat
- 2.Qe1
- 1...Be1
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qxe1
- threat
- 3.Qxb4#
- threat
- 2.Qxe7
- threat
- 3.Qxc7#
- 2...c6
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bf2
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qxe7
- threat
- 3.Qxc7#
- 2...c6
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bh1
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bg2
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bd3
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bf3
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qxe7
- threat
- 3.Qxc7#
- 2...c6
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Kxc7
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bg6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bh7
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...d3
- 2.Qh8
- threat
- 3.Qa1#
- threat
- 2.Qh8
- 1...f3
- 2.Qxg3
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Qxg3
- 1...c6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Rd7
- threat
- 3.Ra7#
- threat
- 2.Qxe7
- threat
- 3.Qd8#
- 3.Qa7#
- 3.Qc7#
- threat
- 2.Kb7
- 1...Bxd5!
- 1...Bxh4
- 1.Qh5?
- threat
- 2.Qe8
- threat
- 3.Qa4#
- 3.Qb5#
- 2...c6
- 3.Qd8#
- threat
- 2.Qe8
- 1...Bxd5
- 2.Qxd5
- threat
- 3.Qa8#
- 2...c6
- 3.Qd8#
- threat
- 2.Qxd5
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bg6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...c6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Rd7
- threat
- 3.Ra7#
- threat
- 2.Kb7
- 1...f3!
- threat
- 1.Qg6?
- threat
- 2.Qe8
- threat
- 3.Qa4#
- 3.Qb5#
- 2...c6
- 3.Qd8#
- threat
- 2.Qe8
- 1...Bxg6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...f3
- 2.Qxg3
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Qxg3
- 1...c6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Rd7
- threat
- 3.Ra7#
- threat
- 2.Kb7
- 1...Bxd5!
- threat
- 1.Qh8?
- threat
- 2.Qxd4
- threat
- 3.Bb6#
- 3.Qa1#
- threat
- 2.Qe8
- threat
- 3.Qa4#
- 3.Qb5#
- 2...c6
- 3.Qd8#
- threat
- 2.Qxd4
- 1...Bxc2
- 2.Kb7
- threat
- 3.Bb6#
- 3.Qa8#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- 3.Qa8#
- threat
- 2.Kd7
- threat
- 3.Qa8#
- threat
- 2.Bxd4+
- 2...c5
- 3.Qd8#
- 2...c5
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 3.Qd8#
- 2...c5
- 2.Qe8
- threat
- 3.Qa4#
- 3.Qb5#
- 2...c6
- 3.Qd8#
- threat
- 2.Kb7
- 1...Bf2
- 2.Kxc7
- threat
- 3.Bb6#
- 3.Qa8#
- threat
- 2.Qe5
- threat
- 3.Qxc7#
- 2...c6
- 3.Qc7#
- threat
- 2.Qd8
- threat
- 3.Qxc7#
- threat
- 2.Qe8
- threat
- 3.Qa4#
- 3.Qb5#
- 2...c6
- 3.Qd8#
- threat
- 2.Kxc7
- 1...Bd3
- 2.Kb7
- threat
- 3.Bb6#
- 3.Qa8#
- threat
- 2.Bxd4+
- 2...c5
- 3.Qd8#
- 2...c5
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 3.Qd8#
- 2...c5
- 2.Qe8
- threat
- 3.Qa4#
- 3.Qb5#
- 2...c6
- 3.Qd8#
- threat
- 2.Kb7
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- 3.Qa8#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- 3.Qa8#
- threat
- 2.Bxd4+
- 2...c5
- 3.Qd8#
- 2...c5
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 3.Qd8#
- 2...c5
- 2.Kb7
- 1...Bg6
- 2.Kb7
- threat
- 3.Bb6#
- 3.Qa8#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- 3.Qa8#
- threat
- 2.Bxd4+
- 2...c5
- 3.Qd8#
- 2...c5
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 3.Qd8#
- 2...c5
- 2.Qxd4
- threat
- 3.Bb6#
- 3.Qa1#
- threat
- 2.Qd8
- threat
- 3.Bxd4#
- 3.Ba7#
- 3.Qxc7#
- threat
- 2.Kb7
- 1...f3
- 2.Qxd4
- threat
- 3.Bb6#
- 3.Qa1#
- threat
- 2.Qxd4
- 1...Bxd5!
- threat
- 1.Bd6+?
- Keys
- 1.Qh1!
- 1...Bxh1
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bxc2
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Ba7+
- 1...Bxd5
- 2.Qxd5
- threat
- 3.Qa8#
- 2...c6
- 3.Qd8#
- threat
- 2.Qxd5
- 1...Bh2
- 2.Qe1
- threat
- 3.Qxb4#
- threat
- 2.Qe1
- 1...Be1
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Qxe1
- threat
- 3.Qxb4#
- threat
- 2.Kxc7
- 1...Bf2
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bh4
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bg2
- 2.Kxc7
- threat
- 3.Bb6#
- 2...f3+
- 3.Bd6#
- threat
- 2.Kxc7
- 1...Bd3
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bf3
- 2.Kxc7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- 1...Bf5
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bg6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...Bh7
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Kxc7
- threat
- 3.Bxd4#
- 3.Bb6#
- 3.Bd6#
- 3.Ba7#
- 3.Bxe7#
- threat
- 2.Sf2
- threat
- 3.Qa1#
- threat
- 2.Ba7+
- 2...c5
- 3.Rxc5#
- 2...c5
- 2.Kb7
- 1...d3
- 2.Qh8
- threat
- 3.Qa1#
- threat
- 2.Qh8
- 1...f3
- 2.Sf2
- threat
- 3.Qa1#
- threat
- 2.Sf2
- 1...c6
- 2.Kb7
- threat
- 3.Bb6#
- threat
- 2.Rd7
- threat
- 3.Ra7#
- threat
- 2.Kb7
- 1...Bxh1
- 1.Qh1!
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