MESON Chess Problem Database
Problem Display
PID: 72135 (B2K4/5Nnp/3Bp3/2N1P2r/pPPk1p2/2R2Q2/1Pb1r2b/2n5 w - - 0 1)
O'Keefe, John James
Chess, 1952
#3
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Rd2
- 2.Sd3
- threat
- 3.Bc5#
- 3.Qe4#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Rxc2
- threat
- 3.Qe4#
- 3.Qc3#
- threat
- 2.Sd3
- 1...Rf2
- 2.Qxf2#
- 1...Rg2
- 2.Sd3
- threat
- 3.Bc5#
- 3.Qe4#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Rxc2
- threat
- 3.Qe4#
- 3.Qc3#
- threat
- 2.Sd3
- 1...Rxe5
- 2.Qf2+
- 2...Rxf2
- 3.Bxe5#
- 2...R2e3
- 3.Bxe5#
- 2...R5e3
- 3.Be5#
- 2...Rxf2
- 2.Qf2+
- 1...Bd1
- 2.Sb3+
- 2...Bxb3
- 3.Bc5#
- 2...Sxb3
- 3.Qd3#
- 2...axb3
- 3.Bc5#
- 2...Bxb3
- 2.Se4
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sb3
- 3.Qd3#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Sb3+
- 1...Bb3
- 2.Sxb3+
- 2...Sxb3
- 3.Qd3#
- 2...axb3
- 3.Bc5#
- 2...Sxb3
- 2.Se4
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Sxb3+
- 1...Bd3
- 2.Sb3+
- 2...Sxb3
- 3.Qxd3#
- 2...axb3
- 3.Bc5#
- 2...Sxb3
- 2.Se4
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sb3
- 3.Qxd3#
- threat
- 2.Sb3+
- 1...Be4
- 2.Sxe4
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sb3
- 3.Qd3#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Sxe4
- 1...Bf5
- 2.Se4
- threat
- 3.Bc5#
- 2...Sb3
- 3.Qd3#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Se4
- 1...Sa2
- 2.Sb3+
- 2...Bxb3
- 3.Bc5#
- 3.Qd3#
- 2...axb3
- 3.Bc5#
- 2...Bxb3
- 2.Se4
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sxc3
- 3.Qxc3#
- threat
- 2.Sb3+
- 1...Sb3
- 2.Sxb3+
- 2...Bxb3
- 3.Bc5#
- 3.Qd3#
- 2...axb3
- 3.Bc5#
- 2...Bxb3
- 2.Sxb3+
- 1...Sf5
- 2.Sxe6#
- 1...Se8
- 2.Sxe6#
- 1...Rd2
- Tries
- 1.Kd7?
- threat
- 2.Sxe6+
- 2...Sxe6
- 3.Qd5#
- 2...Sxe6
- 2.Sxe6+
- 1...Rexe5
- 2.Sd8
- threat
- 3.Sc6#
- 2...Rxc5
- 3.Qf2#
- 2...Be4
- 3.Qf2#
- threat
- 2.Sd8
- 1...Rhxe5
- 2.Qf2+
- 2...Rxf2
- 3.Bxe5#
- 2...R2e3
- 3.Bxe5#
- 2...R5e3
- 3.Be5#
- 2...Rxf2
- 2.Qf2+
- 1...Re4
- 2.Sd8
- threat
- 3.Sc6#
- threat
- 2.Sd8
- 1...Rh6
- 2.Sxe6+
- 2...Rxe6
- 3.Bc5#
- 3.Qd5#
- 2...Sxe6
- 3.Qd5#
- 2...Rxe6
- 2.Sxe6+
- 1...Bd3
- 2.Sb3+
- 2...Sxb3
- 3.Qxd3#
- 2...axb3
- 3.Bc5#
- 2...Sxb3
- 2.Se4
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sb3
- 3.Qxd3#
- threat
- 2.Sb3+
- 1...Be4
- 2.Sxe4
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sb3
- 3.Qd3#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Sxe4
- 1...Bf5
- 2.Se4
- threat
- 3.Bc5#
- 2...Sb3
- 3.Qd3#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Se4
- 1...Sd3!
- threat
- 1.Sb3+?
- 1...Bxb3
- 2.Bc5#
- 1...axb3
- 2.Bc5#
- 1...Sxb3!
- 1...Bxb3
- 1.Sxa4?
- threat
- 2.Bc5#
- 1...Rexe5
- 2.Bc5+
- 2...Rxc5
- 3.Qf2#
- 2...Rxc5
- 2.Bc5+
- 1...Rhxe5
- 2.Qf2+
- 2...Rxf2
- 3.Bxe5#
- 2...R2e3
- 3.Bxe5#
- 2...R5e3
- 3.Bc5#
- 3.Be5#
- 2...Rxf2
- 2.Qf2+
- 1...Sd3
- 2.Qxd3+
- 2...Bxd3
- 3.Bc5#
- 2...Bxd3
- 2.Qxd3+
- 1...Sb3!
- threat
- 1.Se4?
- threat
- 2.Bc5#
- 1...Sd3
- 2.Qxd3+
- 2...Bxd3
- 3.Bc5#
- 2...Bxd3
- 2.Qxd3+
- 1...Sb3!
- threat
- 1.Sa6?
- threat
- 2.Bc5#
- 1...Rexe5
- 2.Sb8
- threat
- 3.Sc6#
- 2...Rc5
- 3.Qf2#
- 2...Be4
- 3.Qf2#
- threat
- 2.Bc5+
- 2...Rxc5
- 3.Qf2#
- 2...Rxc5
- 2.Sb8
- 1...Rhxe5
- 2.Sb8
- threat
- 3.Sc6#
- 2...Rc5
- 3.Bxc5#
- 2...Be4
- 3.Bxe5#
- threat
- 2.Qf2+
- 2...Rxf2
- 3.Bxe5#
- 2...R2e3
- 3.Bxe5#
- 2...R5e3
- 3.Bc5#
- 3.Be5#
- 2...Rxf2
- 2.Sb8
- 1...Sd3
- 2.Qxd3+
- 2...Bxd3
- 3.Bc5#
- 2...Bxd3
- 2.Qxd3+
- 1...Sb3!
- threat
- 1.Sd7?
- threat
- 2.Bc5#
- 1...Rexe5
- 2.Sdxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 3.Qf2#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Sb8
- threat
- 3.Sc6#
- 2...Rc5
- 3.Qf2#
- 2...Be4
- 3.Qf2#
- threat
- 2.Sfxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 3.Qf2#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Bc5+
- 2...Rxc5
- 3.Qf2#
- 2...Rxc5
- 2.Sdxe5
- 1...Rhxe5
- 2.Sdxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Sb8
- threat
- 3.Sc6#
- 2...Rc5
- 3.Bxc5#
- 2...Be4
- 3.Bxe5#
- threat
- 2.Sfxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Qf2+
- 2...Rxf2
- 3.Bxe5#
- 2...R2e3
- 3.Bxe5#
- 2...R5e3
- 3.Bc5#
- 3.Be5#
- 2...Rxf2
- 2.Sdxe5
- 1...Sd3
- 2.Qxd3+
- 2...Bxd3
- 3.Bc5#
- 2...Bxd3
- 2.Qxd3+
- 1...Sb3!
- threat
- 1.Sg5?
- threat
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Rxe5
- 2.Qd5+
- 2...Rxd5
- 3.Sf3#
- 2...exd5
- 3.Sf3#
- 2...Rxd5
- 2.Qf2+
- 2...Re3
- 3.Sf3#
- 2...Re3
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 3.Be5#
- 2...Be4
- 3.Sf3#
- 3.Bxe5#
- 3.Qe3#
- 3.Qf2#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Qd5+
- 1...Re1
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qf2+
- 2...Re3
- 3.Sf3#
- 2...Re3
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Rd2
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Rxc2
- threat
- 3.Qe4#
- 3.Qc3#
- threat
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qe3+
- 2...fxe3
- 3.Sf3#
- 2...fxe3
- 2.Qxf4+
- 2...Be4
- 3.Sf3#
- 3.Qe3#
- 3.Qxe4#
- 2...Bxf4
- 3.Sf3#
- 2...Be4
- 2.Scxe6+
- 1...Rg2
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Rxc2
- threat
- 3.Qe4#
- 3.Qc3#
- threat
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qe3+
- 2...fxe3
- 3.Sf3#
- 2...fxe3
- 2.Qxf4+
- 2...Be4
- 3.Sf3#
- 3.Qe3#
- 3.Qxe4#
- 2...Bxf4
- 3.Sf3#
- 2...Be4
- 2.Scxe6+
- 1...Re3
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qxe3+
- 2...fxe3
- 3.Sf3#
- 2...fxe3
- 2.Scxe6+
- 1...Re4
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qf2+
- 2...Re3
- 3.Sf3#
- 2...Re3
- 2.Scxe6+
- 1...Rh3
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Scxe6+
- 1...Rh4
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Scxe6+
- 1...Rh6
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Qd5+
- 1...Bb1
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Bd1
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sd7
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sb3
- 3.Qd3#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Qxe4#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Bb3
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sd7
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Sd3
- 3.Qxd3#
- threat
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qxe2
- threat
- 3.Sf3#
- 3.Qf2#
- 3.Qe4#
- threat
- 2.Qe4+
- 2...Rxe4
- 3.Sf3#
- 2...Rxe4
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 3.Qxe4#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Bd3
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Scxe6+
- 1...Be4
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qxe4+
- 2...Rxe4
- 3.Sf3#
- 2...Rxe4
- 2.Scxe6+
- 1...Bf5
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Bxf4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Re4
- 2.Qd5+
- 1...Bg6
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Bxf4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Bg1
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Bg3
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Qd5+
- 2...exd5
- 3.Sf3#
- 2...exd5
- 2.Qxf4+
- 2...Re4
- 3.Sf3#
- 2...Be4
- 3.Sf3#
- 2...Bxf4
- 3.Sf3#
- 2...Re4
- 2.Scxe6+
- 1...Sd3
- 2.Sxd3
- threat
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- 2...Bxd3
- 3.Qxd3#
- threat
- 2.Scxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sgxe6+
- 2...Sxe6+
- 3.Sxe6#
- 2...Sxe6+
- 2.Sxd3
- 1...Rxg5!
- threat
- 1.Qxe2?
- threat
- 2.Qf2#
- 1...Sxe2
- 2.Sb3+
- 2...Bxb3
- 3.Bc5#
- 2...axb3
- 3.Bc5#
- 2...Bxb3
- 2.Sb3+
- 1...Rh3
- 2.Sd3
- threat
- 3.Bc5#
- 3.Qe4#
- threat
- 2.Sd3
- 1...Bg1
- 2.Sd3
- threat
- 3.Bc5#
- 3.Qe4#
- 2...Rxe5
- 3.Bxe5#
- 3.Qxe5#
- threat
- 2.Qxc2
- threat
- 3.Qe4#
- 2...Rxe5
- 3.Bxe5#
- 2...Sd3
- 3.Rxd3#
- 3.Qxd3#
- threat
- 2.Sd3
- 1...Bg3!
- threat
- 1.Kd7?
- Keys
- 1.Sd3!
- threat
- 2.Bc5#
- 1...Rexe5
- 2.Sdxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 3.Qf2#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Sfxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 3.Qe4#
- 3.Qf2#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Bc5+
- 2...Rxc5
- 3.Qe4#
- 3.Qf2#
- 2...Rxc5
- 2.Sdxe5
- 1...Rhxe5
- 2.Sdxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Sfxe5
- threat
- 3.Sc6#
- 3.Bc5#
- 2...Rxe5
- 3.Bxe5#
- threat
- 2.Sdxe5
- 1...Sxd3
- 2.Qxd3+
- 2...Bxd3
- 3.Bc5#
- 2...Bxd3
- 2.Qxd3+
- 1...Sb3
- 2.Qxe2
- threat
- 3.Qf2#
- 3.Qe4#
- 2...Rxe5
- 3.Bxe5#
- 3.Qxe5#
- threat
- 2.Qxe2
- threat
- 1.Sd3!
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