MESON Chess Problem Database
Problem Display
PID: 41434 (6bQ/R5rq/N1pk2pr/N7/7B/2p5/B3R2b/4K3 w - - 0 1)
Sydenham, Colin Peter
Schweizerische Schachzeitung, 1985
#2
8 + 9
| 3748 | FIDE Album (1983-1985) | 1992 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
| 133 | The Problemist Supplement | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rf7
- 2.Re6#
- 2.Qd4#
- 1...Bg1
- 2.Bg3#
- 1...Bg3+
- 2.Bxg3#
- 1...Be6
- 2.Rxe6#
- 1...Bf7
- 2.Be7#
- 2.Qb8#
- 2.Qd8#
- 2.Qf8#
- 1...Rf7
- Tries
- 1.Bf7?
- threat
- 2.Sc4#
- 2.Be7#
- 1...Bg3+
- 2.Bxg3#
- 1...Rxf7
- 2.Qd4#
- 1...Bxf7
- 2.Qd8#
- 1...c5
- 2.Be7#
- 1...g5
- 2.Sc4#
- 1...Rxh4!
- threat
- 1.Ree7?
- threat
- 2.Sb7#
- 2.Rad7#
- 1...Bg3+
- 2.Bxg3#
- 1...Rxh4
- 2.Rad7#
- 1...Bxa2
- 2.Rad7#
- 2.Qd8#
- 1...Bb3
- 2.Rad7#
- 2.Qd8#
- 1...Bc4
- 2.Rad7#
- 2.Qd8#
- 1...Be6
- 2.Rxe6#
- 2.Qb8#
- 1...c5
- 2.Rad7#
- 1...g5
- 2.Rad7#
- 1...Rxe7+!
- threat
- 1.Qxg7?
- threat
- 2.Sb7#
- 2.Be7#
- 2.Rd7#
- 1...Bg3+
- 2.Bxg3#
- 1...Rxh4
- 2.Sb7#
- 2.Rd7#
- 1...Bxa2
- 2.Rd7#
- 1...Bb3
- 2.Rd7#
- 1...Bc4
- 2.Rd7#
- 1...c5
- 2.Be7#
- 2.Rd7#
- 1...Be6
- 2.Sb7#
- 2.Be7#
- 2.Rxe6#
- 1...Bf7
- 2.Be7#
- 2.Qf8#
- 1...g5
- 2.Sb7#
- 2.Rd7#
- 1...Qxg7!
- threat
- 1.Qxg8?
- threat
- 2.Sc4#
- 2.Re6#
- 2.Qe6#
- 1...Bg3+
- 2.Bxg3#
- 1...Rxh4
- 2.Re6#
- 2.Qe6#
- 1...Rxa7
- 2.Qe6#
- 1...Rxg8
- 2.Re6#
- 1...Rb7
- 2.Qe6#
- 1...Rc7
- 2.Qe6#
- 1...c5
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 1...Re7
- 2.Sc4#
- 1...Rf7
- 2.Re6#
- 1...Be5
- 2.Sc4#
- 2.Qe6#
- 1...g5
- 2.Sc4#
- 1...Qxg8!
- threat
- 1.Bf7?
- Keys
- 1.Rf7!
- threat
- 2.Sb7#
- 2.Re6#
- 1...Bg3+
- 2.Bxg3#
- 1...Rxf7
- 2.Qd4#
- 1...Bxf7
- 2.Qd8#
- 1...Be5
- 2.Sb7#
- 1...c5
- 2.Re6#
- 1...g5
- 2.Sb7#
- threat
- 1.Rf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- B(a);N_GUARD::B(D)
- B(a);CHECK,N_GUARD::B(D),XB(a)
- B(i);N_GUARD::R1(C),XB(i)
- Tries
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,N_GUARD::B(D),XB(a)
- R(g);OGATE,XB(B)::QAR2(H)
- B(i);OGATE,XB(B)::QAR2(H)
- P(c);::B(D)
- P(e);::S(E)
- Refutation
- R(f);XB(D)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,N_GUARD::B(D),XB(a)
- R(f);XB(D)::R1(G)
- P(c);::R1(G)
- P(e);::R1(G)
- Refutation
- R(g);CHECK,XR(C)
- Try
- Q(H);XR(g)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::B(D),XB(a)
- B(i);XB(B)::R1(G)
- B(i);::R1(G)
- Refutation
- Q(h);XQ(H)
- Try
- Q(H);XB(i)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::B(D),XB(a)
- R(g);XR(G)::QAR1(H)
- R(g);XQ(H)::R1(C)
- R(g);::QAR1(H)
- R(g);P_PINR(C)::S(E)
- R(g);::R1(C)
- P(e);::S(E)
- Refutation
- Q(h);XQ(H)
- Try
- Actual
- R(G);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,N_GUARD::B(D),XB(a)
- R(g);OGATE,XR(G)::QAR2(H)
- B(i);OGATE,XR(G)::QAR2(H)
- B(a);::S(E)
- P(c);::R1(C)
- P(e);::S(E)
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