MESON Chess Problem Database
Problem Display
PID: 39965 (4k3/6K1/2P2B2/4n3/8/8/2Q4b/8 w - - 0 1)
Mauldon, JG
The Problemist, 1972
#2
4 + 3
| 136 | Problem Observer | 1972 |
| 56 | The Problemist | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Sf3
- 2.Qg6#
- 1...Sc4
- 2.Qg6#
- 1...Sg4
- 2.Qg6#
- 1...Sxc6
- 2.Qxc6#
- 1...Sg6
- 2.Qxg6#
- 1...Sd7
- 2.Qg6#
- 1...Sf3
- Tries
- 1.Qd1?
- threat
- 2.Qd8#
- 1...Sd3
- 2.Qh5#
- 1...Sd7
- 2.Qh5#
- 2.Qxd7#
- 2.cxd7#
- 1...Sf7
- 2.Qd7#
- 1...Sxc6!
- threat
- 1.Qb3?
- threat
- 2.Qe6#
- 2.Qg8#
- 2.Qb8#
- 1...Sxc6
- 2.Qf7#
- 1...Sd3
- 2.Qe6#
- 2.Qf7#
- 2.Qg8#
- 1...Sf3
- 2.Qe6#
- 2.Qf7#
- 2.Qg8#
- 1...Sg4
- 2.Qe6#
- 2.Qf7#
- 2.Qg8#
- 1...Sg6
- 2.Qf7#
- 1...Sd7
- 2.Qe6#
- 2.Qf7#
- 1...Sf7
- 2.Qe6#
- 2.Qxf7#
- 1...Sc4!
- threat
- 1.Qf5?
- threat
- 2.Qe6#
- 2.Qc8#
- 1...Sg6
- 2.Qxg6#
- 2.Qd7#
- 2.Qc8#
- 1...Sd7
- 2.Qe6#
- 2.Qg6#
- 2.Qxd7#
- 2.Qh5#
- 2.cxd7#
- 1...Sf7
- 2.Qe6#
- 2.Qd7#
- 1...Sxc6!
- threat
- 1.Qg6+?
- 1...Sf7
- 2.Qxf7#
- 1...Sxg6!
- 1...Sf7
- 1.Qh7?
- threat
- 2.Qg8#
- 2.Qh8#
- 1...Sg6
- 2.Qxg6#
- 1...Sd7
- 2.Qg6#
- 2.Qh5#
- 1...Sf7
- 2.Qg8#
- 1...Sxc6!
- threat
- 1.Qa2?
- threat
- 2.Qe6#
- 2.Qg8#
- 2.Qa8#
- 1...Sxc6
- 2.Qf7#
- 1...Sd3
- 2.Qe6#
- 2.Qf7#
- 2.Qg8#
- 1...Sf3
- 2.Qe6#
- 2.Qf7#
- 2.Qg8#
- 1...Sg4
- 2.Qe6#
- 2.Qf7#
- 2.Qg8#
- 1...Sg6
- 2.Qf7#
- 1...Sd7
- 2.Qe6#
- 2.Qf7#
- 1...Sf7
- 2.Qe6#
- 2.Qxf7#
- 1...Sc4!
- threat
- 1.Qc4?
- threat
- 2.Qe6#
- 2.Qg8#
- 1...Sxc6
- 2.Qf7#
- 2.Qxc6#
- 1...Sg6
- 2.Qf7#
- 1...Sd7
- 2.Qe6#
- 2.Qf7#
- 1...Sf7
- 2.Qe6#
- 2.Qxf7#
- 1...Sxc4!
- threat
- 1.Qc5?
- threat
- 2.Qe7#
- 2.Qf8#
- 1...Sxc6
- 2.Qxc6#
- 1...Sd7
- 2.Qe7#
- 2.Qh5#
- 1...Sg6!
- threat
- 1.c7?
- threat
- 2.c8Q#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qg6#
- 2.c8Q#
- 2.c8R#
- 1...Sf7
- 2.Qa4#
- 2.Qc6#
- 1...Kd7!
- threat
- 1.Qd1?
- Keys
- 1.Qa4!
- threat
- 2.Qa8#
- 1...Sxc6
- 2.Qxc6#
- 1...Sd3
- 2.c7#
- 1...Sf3
- 2.c7#
- 1...Sc4
- 2.c7#
- 1...Sg4
- 2.c7#
- 1...Sg6
- 2.c7#
- 1...Sd7
- 2.cxd7#
- 1...Sf7
- 2.c7#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::QAB(A)
- S(b);OGATE,XP(B)::QAB(A),XS(b)
- S(b);N_GUARD::QAB(A),XS(b)
- Tries
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- S(b);N_GUARD::QAB(A)
- S(b);N_GUARD::QAB1(A)
- Refutation
- S(b);XP(B)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD,XP(B)::QAB1(A)
- S(b);N_GUARD::QAB1(A)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- DUALS(2)
- Refutation
- S(b);XP(B)
- Try
- Q(A);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAB(A),XS(b)
- S(b);::QAR2(A)
- Refutation
- S(b);XP(B)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD,XP(B)::QAB1(A)
- S(b);N_GUARD::QAB1(A)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAB1(A)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XP(B)::QAB(A),XS(b)
- Refutation
- S(b);
- Try
- P(B);
- Threat
- P=Q
- Vars
- S(b);N_GUARD::QAB(A),XS(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- Q(A);
- Threat
- QAR(A)
- Vars
- S(b);OGATE,P_SPINS(b),XP(B)::QAB(A),XS(b)
- S(b);N_GUARD::QAB(A)+P(B)
- S(b);OGATE::P(B),XS(b)
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