MESON Chess Problem Database
Problem Display
PID: 159411 (8/2K5/1pR3N1/3kNP2/2R1n3/4q1p1/2n5/4Q3 w - - 0 1)
Sydenham, Colin Peter
Comm., Problemas, 1977
#2
7 + 6
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Qxe4#
- 1...Qg1
- 2.Qxe4#
- 1...Qd2
- 2.Qxe4#
- 1...Qf2
- 2.Qxe4#
- 1...Qc5
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qh6
- 2.Qxe4#
- 1...Qa3
- 2.Qxe4#
- 1...Qb3
- 2.Qxe4#
- 1...Qc3
- 2.Qxe4#
- 1...Sd2
- 2.Rd6#
- 1...Sf2
- 2.Rd6#
- 1...Sc3
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 1...Sg5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sf6
- 2.Rd6#
- 1...Qc1
- Tries
- 1.Sg4?
- threat
- 2.Se7#
- 1...Qf4+
- 2.Sxf4#
- 1...Qc5
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qa3
- 2.Sf4#
- 2.Qxe4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sc3
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc5!
- threat
- 1.Re6?
- threat
- 2.Se7#
- 1...Qg5
- 2.Qxe4#
- 1...Qa3
- 2.Sf4#
- 2.Qxe4#
- 1...Qc5+!
- threat
- 1.Qxe3?
- threat
- 2.Qxe4#
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sd2
- 2.Sf4#
- 2.Se7#
- 2.Rd6#
- 1...Sf2
- 2.Sf4#
- 2.Se7#
- 2.Rd6#
- 1...Sc3
- 2.Sf4#
- 2.Se7#
- 2.Rd6#
- 1...Sc5
- 2.Sf4#
- 2.Se7#
- 2.Rd6#
- 1...Sg5
- 2.Sf4#
- 2.Se7#
- 2.Rd6#
- 1...Sd6
- 2.Sf4#
- 2.Se7#
- 2.Rxd6#
- 1...Sf6
- 2.Sf4#
- 2.Se7#
- 2.Rd6#
- 1...Sxe3!
- threat
- 1.Sg4?
- Keys
- 1.Sd7!
- threat
- 2.Se7#
- 1...Qf4+
- 2.Sxf4#
- 1...Qc5
- 2.Qxe4#
- 1...Sc5
- 2.Sxb6#
- 1...Qg5
- 2.Sxb6#
- 2.Qxe4#
- 1...Qa3
- 2.Sf4#
- 2.Sxb6#
- 2.Qxe4#
- 1...Sd2
- 2.Sf6#
- 1...Sf2
- 2.Sf6#
- 1...Sc3
- 2.Sf6#
- 1...Sg5
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(b);OGATE::QAB1(A),XS(d)
- Q(b);OGATE,P_PINR(E)::QAB1(A),XS(d)
- S(d);N_GUARD::R1(E)
- S(d);N_GUARD::R1(E),XS(d)
- Tries
- Try
- S(C);
- Threat
- S(F)
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);OGATE,P_PINR(E)::QAB1(A),XS(d)
- Q(b);OGATE::QAB1(A),XS(d)
- S(d);N_GUARD::S(C)
- S(d);N_GUARD::S(C),XS(d)
- Refutation
- S(d);
- Try
- R(E);
- Threat
- S(F)
- Vars
- Q(b);OGATE::QAB1(A),XS(d)
- Refutation
- Q(b);CHECK
- Try
- Q(A);XQ(b)
- Threat
- QAB1(A),XS(d)
- Refutation
- S(a);XQ(A)
- Try
- Actual
- S(C);
- Threat
- S(F)
- Vars
- Q(b);CHECK,N_GUARD::S(F),XQ(b)
- Q(b);OGATE,P_PINR(E)::QAB1(A),XS(d)
- S(d);S_CUTQ(b)::S(C),XP(f)
- S(d);N_GUARD::S(C)
- S(d);N_GUARD::S(C),XS(d)
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