MESON Chess Problem Database
Problem Display
PID: 145101 (8/P5PB/6R1/N2b1kN1/1K6/2pP3P/6pB/Qn4R1 w - - 0 1)
O'Shea, Patrick
The Problemist, 1989
#2
12 + 5
SOLUTION
- SOUND
- Sets
- 1...Be4
- 2.dxe4#
- 1...c2
- 2.Qe5#
- 2.Qf6#
- 1...Be4
- Tries
- 1.Sf3?
- threat
- 2.Sd4#
- 2.Sh4#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Rh6#
- 1...Bc6
- 2.Sd4#
- 2.Sh4#
- 2.Rxc6#
- 2.Rd6#
- 2.Rh6#
- 1...Be6
- 2.Sd4#
- 2.Sh4#
- 2.Rh6#
- 1...Bf7
- 2.Sd4#
- 2.Sh4#
- 1...Bg8
- 2.Sd4#
- 2.Sh4#
- 1...Bxf3!
- threat
- 1.Se4?
- threat
- 2.Sd6#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Rf6#
- 2.Rh6#
- 1...Bc6
- 2.Sd6#
- 2.Rxc6#
- 2.Rd6#
- 2.Rf6#
- 2.Rh6#
- 1...Be6
- 2.Sd6#
- 2.R6xg2#
- 2.Rg4#
- 2.Rg5#
- 2.Rf6#
- 2.Rh6#
- 1...Bf7
- 2.Sd6#
- 2.Rf6#
- 1...Bg8
- 2.Sd6#
- 2.Rf6#
- 1...Bxe4!
- threat
- 1.Sf7?
- threat
- 2.Sd6#
- 2.Sh6#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Rh6#
- 1...Bc6
- 2.Sd6#
- 2.Sh6#
- 2.Rxc6#
- 2.Rd6#
- 2.Rh6#
- 1...Be6
- 2.Sd6#
- 2.Sh6#
- 2.Rh6#
- 1...Bxf7!
- threat
- 1.Rxg2?
- threat
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 1...Bc6
- 2.Rxc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 1...Be6
- 2.Rf2#
- 2.Rxe6#
- 2.Rh6#
- 1...Bf7
- 2.Rf2#
- 1...Bg8
- 2.Rf2#
- 1...Bxg2!
- threat
- 1.Qa2?
- threat
- 2.Qxd5#
- 1...Bb3
- 2.Qf2#
- 1...Bf3
- 2.Qe6#
- 2.Qf7#
- 1...Bc4
- 2.Qf2#
- 1...Be4
- 2.Qe6#
- 2.Qf7#
- 2.dxe4#
- 1...Bc6
- 2.Qe6#
- 2.Qf7#
- 1...Be6
- 2.Qxe6#
- 2.Qf2#
- 1...Bb7
- 2.Qe6#
- 2.Qf7#
- 1...Bf7
- 2.Qxf7#
- 2.Qf2#
- 1...Ba8
- 2.Qe6#
- 2.Qf7#
- 1...Bg8
- 2.Qf2#
- 1...Bxa2!
- threat
- 1.a8Q?
- threat
- 2.Qxd5#
- 1...Ba2
- 2.Qf3#
- 2.Qe4#
- 1...Bb3
- 2.Qf3#
- 2.Qe4#
- 1...Bf3
- 2.Qxf3#
- 2.Qc8#
- 2.Qf8#
- 1...Bc4
- 2.Qf3#
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 2.Qc8#
- 2.Qf8#
- 2.dxe4#
- 1...Bc6
- 2.Qf8#
- 1...Be6
- 2.Qf3#
- 2.Qe4#
- 1...Bb7
- 2.Qf8#
- 1...Bf7
- 2.Qf3#
- 2.Qe4#
- 1...Bg8
- 2.Qf3#
- 2.Qe4#
- 1...Bxa8!
- threat
- 1.g8Q?
- threat
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 2.Qxd5#
- 1...Ba2
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 1...Bb3
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 1...Bf3
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 2.Qe6#
- 2.Qf7#
- 2.Qc8#
- 2.Qf8#
- 1...Bc4
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 1...Be4
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 2.Qe6#
- 2.Qf7#
- 2.Qc8#
- 2.Qf8#
- 2.dxe4#
- 1...Bc6
- 2.Rxc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 2.Qe6#
- 2.Qf7#
- 2.Qf8#
- 1...Be6
- 2.Rxe6#
- 2.Rh6#
- 2.Qxe6#
- 1...Bb7
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 2.Qe6#
- 2.Qf7#
- 2.Qf8#
- 1...Bf7
- 2.Qxf7#
- 1...Ba8
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rh6#
- 2.Qe6#
- 2.Qf7#
- 2.Qc8#
- 2.Qf8#
- 1...Bxg8!
- threat
- 1.g8S?
- threat
- 2.Sh6#
- 2.Se7#
- 2.Rg7#
- 1...Bf7
- 2.Sh6#
- 2.Se7#
- 1...Bxg8!
- threat
- 1.Sf3?
- Keys
- 1.Re1!
- threat
- 2.Re5#
- 1...Be4
- 2.dxe4#
- threat
- 1.Re1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(d);OGATE::P(D),XB(d)
- Tries
- Try
- S(H);
- Threat
- DUALS(7)
- Refutation
- B(d);XS(H)
- Try
- S(H);
- Threat
- DUALS(7)
- Refutation
- B(d);XS(H)
- Try
- S(H);
- Threat
- DUALS(7)
- Refutation
- B(d);XS(H)
- Try
- R(B);XP(b)
- Threat
- DUALS(6)
- Vars
- B(d);N_GUARD::R(B)
- Refutation
- B(d);XR(B)
- Try
- Q(A);
- Threat
- QAR2(A),XB(d)
- Vars
- B(d);N_GUARD::QAR(A)
- Refutation
- B(d);XQ(A)
- Try
- P(J);
- Threat
- QAR2(J),XB(d)
- Vars
- B(d);N_GUARD::QAR(J)
- Refutation
- B(d);XQ(J)
- Try
- P(K);
- Threat
- DUALS(7)
- Vars
- B(d);N_GUARD::QAR2(K),XB(d)
- Refutation
- B(d);XQ(K)
- Try
- P(K);
- Threat
- DUALS(3)
- Refutation
- B(d);XS(K)
- Try
- Actual
- R(B);
- Threat
- R1(B)
- Vars
- B(d);OGATE::P(D),XB(d)
Developed and maintained by Brian Stephenson.
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