MESON Chess Problem Database
Problem Display
PID: 159412 (nB6/5Rpp/2k5/1R1p1pQ1/P6K/4p3/8/8 w - - 0 1)
Sydenham, Colin Peter
Comm., Schach-Echo, 1977
#2
6 + 7
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...e2
- 2.Qc1#
- 1...d4
- 2.Qg2#
- 1...f4
- 2.Qxd5#
- 1...g6
- 2.Qf6#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...e2
- Tries
- 1.Bg3?
- 1...f4
- 2.Qxd5#
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...e2
- 2.Qc1#
- 1...g6
- 2.Qf6#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...d4!
- 1...f4
- 1.Bf4?
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...d4
- 2.Qg2#
- 1...g6
- 2.Qf6#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...e2!
- 1...Sb6
- 1.Be5?
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...e2
- 2.Qc1#
- 1...d4
- 2.Qg2#
- 1...g6
- 2.Qf6#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...f4!
- 1...Sb6
- 1.Rc7+?
- 1...Kd6
- 2.Qe7#
- 1...Sxc7!
- 1...Kd6
- 1.Rxg7?
- threat
- 2.Qf6#
- 2.Qh6#
- 1...h6
- 2.Qf6#
- 2.Qxh6#
- 2.Qg6#
- 1...Sc7!
- threat
- 1.Qxe3?
- threat
- 2.Qc1#
- 2.Qc5#
- 2.Qc3#
- 2.Qe6#
- 2.Qe8#
- 1...Sc7
- 2.Rb6#
- 2.Qc5#
- 2.Qb6#
- 1...Sb6
- 2.Rc5#
- 2.Rxb6#
- 2.Qc5#
- 2.Qxb6#
- 2.Qe6#
- 1...d4
- 2.Qc1#
- 2.Qf3#
- 2.Qe6#
- 2.Qe8#
- 1...g5+!
- threat
- 1.Qf4?
- threat
- 2.Qd6#
- 1...Sc7
- 2.Rxc7#
- 2.Qxc7#
- 1...g5+!
- threat
- 1.Qe7?
- threat
- 2.Qc5#
- 2.Qd6#
- 2.Qe6#
- 2.Qb7#
- 2.Qd7#
- 2.Qe8#
- 1...Sb6
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 2.Qe6#
- 2.Qb7#
- 2.Qc7#
- 1...Sc7
- 2.Qc5#
- 2.Qxc7#
- 2.Qd7#
- 1...g5+!
- threat
- 1.Qd8?
- threat
- 2.Qxd5#
- 2.Qd6#
- 2.Qd7#
- 2.Qe8#
- 1...Sb6
- 2.Rc7#
- 2.Qxb6#
- 2.Qc7#
- 2.Qd6#
- 1...Sc7
- 2.Rxc7#
- 2.Qxc7#
- 2.Qd7#
- 1...d4
- 2.Qd5#
- 2.Qd6#
- 2.Qd7#
- 2.Qe8#
- 1...g5+!
- threat
- 1.Qxf5?
- threat
- 2.Qc2#
- 2.Qe6#
- 2.Qd7#
- 2.Qxd5#
- 1...Sc7
- 2.Qd7#
- 1...Sb6
- 2.Qe6#
- 1...d4
- 2.Qc2#
- 2.Qe4#
- 2.Qe6#
- 2.Qd7#
- 2.Qf3#
- 2.Qc5#
- 2.Qd5#
- 1...g5+!
- threat
- 1.Qxg7?
- threat
- 2.Rf6#
- 2.Qc3#
- 2.Qf6#
- 2.Qh6#
- 1...Sb6
- 2.Rf6#
- 2.Qf6#
- 2.Qh6#
- 1...d4
- 2.Rf6#
- 2.Qf6#
- 2.Qh6#
- 2.Qg2#
- 1...h6
- 2.Rf6#
- 2.Qc3#
- 2.Qf6#
- 2.Qxh6#
- 2.Qg6#
- 1...Sc7!
- threat
- 1.Bg3?
- Keys
- 1.Bh2!
- 1...f4
- 2.Qxd5#
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...e2
- 2.Qc1#
- 1...d4
- 2.Qg2#
- 1...g6
- 2.Qf6#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...f4
- 1.Bh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(a);OGATE::QAR(D)
- P(b);OGATEB::QAB(D)
- P(c);OGATE::QAB1(D),XP(b)
- P(e);N_GUARD::QAR(D)
- P(f);N_GUARD::QAR(D)
- Tries
- Try
- B(F);
- Vars
- P(c);OGATE::QAB1(D),XP(b)
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- P(a);OGATE::QAR(D)
- P(e);N_GUARD::QAR(D)
- P(f);N_GUARD::QAR(D)
- Refutation
- P(b);
- Try
- B(F);
- Vars
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- P(b);OGATEB::QAB(D)
- P(e);N_GUARD::QAR(D)
- P(f);N_GUARD::QAR(D)
- Refutation
- P(a);
- Try
- B(F);
- Vars
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- P(a);OGATE::QAR(D)
- P(b);OGATEB::QAB(D)
- P(e);N_GUARD::QAR(D)
- P(f);N_GUARD::QAR(D)
- Refutation
- P(c);
- Try
- R(E);CHECK
- Vars
- K(d);P-FLIGHT::QAB1(D)
- Refutation
- S(g);XR(E)
- Try
- R(E);XP(e)
- Threat
- DUALS(2)
- Refutation
- S(g);
- Try
- Q(D);XP(a)
- Threat
- DUALS(5)
- Refutation
- P(e);CHECK
- Try
- Q(D);
- Threat
- QAR1(D)
- Refutation
- P(e);CHECK
- Try
- Q(D);
- Threat
- DUALS(6)
- Refutation
- P(e);CHECK
- Try
- Q(D);
- Threat
- DUALS(4)
- Refutation
- P(e);CHECK
- Try
- Q(D);XP(c)
- Threat
- DUALS(4)
- Vars
- S(g);::QAB1(D)
- S(g);::QAR2(D)
- Refutation
- P(e);CHECK
- Try
- Q(D);XP(e)
- Threat
- DUALS(4)
- Refutation
- S(g);
- Try
- Actual
- B(F);
- Vars
- P(c);OGATE::QAB1(D),XP(b)
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- P(a);OGATE::QAR(D)
- P(b);OGATEB::QAB(D)
- P(e);N_GUARD::QAR(D)
- P(f);N_GUARD::QAR(D)
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