MESON Chess Problem Database
Problem Display
PID: 15189 (5B2/4r1R1/p2N1k2/2N5/b3RP2/6pB/6K1/8 w - - 0 1)
Sydenham, Colin Peter
diagrammes, 1980
#2
8 + 5
| 3752 | FIDE Album (1980-1982) | 1988 |
| 702 | Phenix | 1988 |
| 56 | The Problemist | 2013 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Rxe4
- 2.Scxe4#
- 2.Sdxe4#
- 1...Re5
- 2.fxe5#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Re6#
- 1...Rb7
- 2.Re6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Se8#
- 2.Re6#
- 1...Rf7
- 2.Re6#
- 1...Rxg7
- 2.Re6#
- 1...Rxe4
- Tries
- 1.Sxa4?
- 1...Rxe4
- 2.Sxe4#
- 1...Rxg7
- 2.Re6#
- 1...Re8
- 2.Sxe8#
- 1...Re5
- 2.fxe5#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Se8#
- 2.Re6#
- 1...Rb7
- 2.Se8#
- 2.Re6#
- 1...Rc7
- 2.Se8#
- 2.Re6#
- 1...Rd7
- 2.Se8#
- 2.Re6#
- 1...Rf7
- 2.Se8#
- 2.Re6#
- 1...a5!
- 1...Rxe4
- 1.Sd7+?
- 1...Rxd7
- 2.Se8#
- 2.Re6#
- 1...Bxd7!
- 1...Rxd7
- 1.Bf5?
- threat
- 2.Rg6#
- 1...Rxg7
- 2.Re6#
- 1...Be8!
- threat
- 1.Rexe7?
- threat
- 2.Sce4#
- 2.Sde4#
- 2.Re6#
- 2.Ref7#
- 1...Bc2
- 2.Sd7#
- 2.Se8#
- 2.Re6#
- 2.Ref7#
- 1...Bb3
- 2.Sce4#
- 2.Sd7#
- 2.Sde4#
- 2.Se8#
- 1...Bd7
- 2.Sce4#
- 2.Sxd7#
- 2.Sde4#
- 2.Ref7#
- 1...Be8
- 2.Sce4#
- 2.Sde4#
- 2.Sxe8#
- 2.Re6#
- 1...Bc6+!
- threat
- 1.Rg4?
- threat
- 2.Bxe7#
- 1...Re8
- 2.Bg7#
- 1...Re5
- 2.fxe5#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Re6#
- 1...Rb7
- 2.Re6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- 1...Rf7
- 2.Re6#
- 1...Rg7
- 2.Bxg7#
- 2.Re6#
- 1...Rh7
- 2.Re6#
- 1...Rxe4!
- threat
- 1.Rg5?
- threat
- 2.Bxe7#
- 1...Rxe4
- 2.Scxe4#
- 1...Re8
- 2.Bg7#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Re6#
- 1...Rb7
- 2.Re6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- 1...Rf7
- 2.Re6#
- 1...Rg7
- 2.Bxg7#
- 2.Re6#
- 1...Rh7
- 2.Re6#
- 1...Re5!
- threat
- 1.Rf7+?
- 1...Rxf7
- 2.Re6#
- 1...Kg6!
- 1...Rxf7
- 1.Rh7?
- threat
- 2.Rh6#
- 1...Kg6
- 2.Rh6#
- 1...Rxh7
- 2.Re6#
- 1...Rg7
- 2.Re6#
- 1...Be8!
- threat
- 1.Rg8?
- threat
- 2.Bxe7#
- 1...Rxe4
- 2.Scxe4#
- 1...Rg7
- 2.Re6#
- 1...Re5
- 2.fxe5#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Re6#
- 1...Rb7
- 2.Re6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- 1...Rf7
- 2.Re6#
- 1...Rh7
- 2.Re6#
- 1...Re8!
- threat
- 1.Sxa4?
- Keys
- 1.Rxg3!
- threat
- 2.Bxe7#
- 1...Rxe4
- 2.Scxe4#
- 1...Re8
- 2.Bg7#
- 1...Re5
- 2.fxe5#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Re6#
- 1...Rb7
- 2.Re6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- 1...Rf7
- 2.Re6#
- 1...Rg7
- 2.Bxg7#
- 2.Re6#
- 1...Rh7
- 2.Re6#
- threat
- 1.Rxg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(e);OGATE::P(D),XR(e)
- R(e);N_GUARD::R1(C),XR(e)
- R(e);N_GUARD::R1(C)
- R(e);N_GUARD,XR(G)::R1(C)
- Tries
- Try
- S(E);XB(b)
- Vars
- R(e);XR(C)::S(F),XR(e)
- R(e);N_GUARD,XR(G)::R1(C)
- R(e);N_GUARD::S(F),XR(e)
- R(e);OGATE::P(D),XR(e)
- R(e);N_GUARD::R1(C),XR(e)
- Refutation
- P(c);
- Try
- S(E);CHECK
- Refutation
- B(b);XS(E)
- Try
- B(B);
- Threat
- R1(G)
- Vars
- R(e);N_GUARD,XR(G)::R1(C)
- Refutation
- B(b);
- Try
- R(C);XR(e)
- Threat
- DUALS(4)
- Refutation
- B(b);CHECK
- Try
- R(G);
- Threat
- B(H),XR(e)
- Vars
- R(e);N_GUARD::B(H)
- R(e);OGATE::P(D),XR(e)
- R(e);N_GUARD::R1(C),XR(e)
- R(e);N_GUARD::R1(C)
- Refutation
- R(e);XR(C)
- Try
- R(G);
- Threat
- B(H),XR(e)
- Vars
- R(e);XR(C)::S(E),XR(e)
- R(e);N_GUARD::B(H)
- R(e);N_GUARD::R1(C),XR(e)
- R(e);N_GUARD::R1(C)
- Refutation
- R(e);
- Try
- R(G);CHECK
- Vars
- R(e);XR(G)::R1(C)
- Refutation
- K(d);P-FLIGHT
- Try
- R(G);
- Threat
- R(G)
- Vars
- K(d);P-FLIGHT::R1(G)
- R(e);N_GUARD,XR(G)::R1(C)
- R(e);N_GUARD::R1(C)
- Refutation
- B(b);
- Try
- R(G);
- Threat
- B(H),XR(e)
- Vars
- R(e);XR(C)::S(E),XR(e)
- R(e);N_GUARD::R1(C)
- R(e);OGATE::P(D),XR(e)
- R(e);N_GUARD::R1(C),XR(e)
- Refutation
- R(e);
- Try
- Actual
- R(G);XP(a)
- Threat
- B(H),XR(e)
- Vars
- R(e);XR(C)::S(E),XR(e)
- R(e);N_GUARD::B(H)
- R(e);OGATE::P(D),XR(e)
- R(e);N_GUARD::R1(C),XR(e)
- R(e);N_GUARD::R1(C)
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