MESON Chess Problem Database
Problem Display
PID: 23242 (8/2rp4/6Q1/4P3/B7/Bqp5/bpP2R1K/bkN5 w - - 0 1)
Petite, Efren
The Problemist, 1996
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Kxc1
- 2.Qg1#
- 1...Qxc2
- 2.Qxc2#
- 1...Kxc1
- Tries
- 1.Se2?
- threat
- 2.Rf1#
- 1...Qf7
- 2.Qg1#
- 1...Qd5!
- threat
- 1.Rf1?
- threat
- 2.Se2#
- 2.Sxb3#
- 1...Qxc2+
- 2.Se2#
- 2.Bxc2#
- 2.Qxc2#
- 1...Qxa4
- 2.Se2#
- 2.Sb3#
- 1...Qxa3
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...bxc1Q
- 2.Rxc1#
- 1...bxc1S
- 2.Rxc1#
- 1...bxc1B
- 2.Rxc1#
- 1...bxc1R
- 2.Rxc1#
- 1...Qc4
- 2.Se2#
- 2.Sd3#
- 1...Qd5
- 2.Sd3#
- 1...Qe6
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qg8
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb4
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb5
- 2.Se2#
- 2.Sd3#
- 1...Qb6
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb7
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb8
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qf7!
- threat
- 1.Qg1?
- threat
- 2.Sxb3#
- 2.Sd3#
- 1...Qxc2
- 2.Bxc2#
- 1...Qxa4
- 2.Sb3#
- 2.Sd3#
- 1...Qxa3
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc1R
- 2.Qxc1#
- 1...Qc4
- 2.Se2#
- 2.Sd3#
- 1...Qd5
- 2.Sd3#
- 1...Qe6
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qf7
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb4
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb5
- 2.Se2#
- 2.Sd3#
- 1...Qb6
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb7
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qb8
- 2.Se2#
- 2.Sb3#
- 2.Sd3#
- 1...Qg8!
- threat
- 1.cxb3+?
- 1...Kxc1
- 2.Qc2#
- 2.Qg1#
- 1...c2!
- 1...Kxc1
- 1.Se2?
- Keys
- 1.Sd3!
- threat
- 2.Qg1#
- 1...Qxc2
- 2.Bxc2#
- 1...Qg8
- 2.Rf1#
- threat
- 1.Sd3!
There are these versions: 168302
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(b);OGATEB,P-FLIGHT,P_SPINP(d),XS(A)::QAR(H)
- Q(e);OGATE,P_PINR(C),P_SPINQ(e),XP(B)::QAB1(H),XQ(e)
- Tries
- Try
- S(A);
- Threat
- R(C)
- Vars
- Q(e);::QAR(H)
- Refutation
- Q(e);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- P(d);OGATE,P_SPINQ(d),XS(A)::R1(C),XQ(d)
- P(d);OGATE,P_SPINS(d),XS(A)::R1(C),XS(d)
- P(d);OGATE,P_SPINB(d),XS(A)::R1(C),XB(d)
- P(d);OGATE,P_SPINR(d),XS(A)::R1(C),XR(d)
- Q(e);::R(C)+S(A)
- Refutation
- Q(e);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(e);OGATE,P_PINR(C),XP(B)::B(F),XQ(e)
- P(d);OGATE,P_SPINQ(d),XS(A)::QAR1(H),XQ(d)
- P(d);OGATE,P_SPINS(d),XS(A)::QAR1(H),XS(d)
- P(d);OGATE,P_SPINB(d),XS(A)::QAR1(H),XB(d)
- P(d);OGATE,P_SPINR(d),XS(A)::QAR1(H),XR(d)
- Q(e);::QAR(H)+S(A)
- Refutation
- Q(e);
- Try
- P(B);CHECK,XQ(e)
- Refutation
- P(f);P_SPINP(f)
- Try
- Actual
- S(A);
- Threat
- QAR(H)
- Vars
- Q(e);OGATE,P_PINR(C),XP(B)::B(F),XQ(e)
- Q(e);::R(C)
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