MESON Chess Problem Database
Problem Display
PID: 63903 (4bN2/3p2pp/p1PR1P1q/4kn1n/K1PR2P1/3Pp1p1/1Q6/8 w - - 0 1)
Stoyanov, Kiril N
StrateGems, 2005
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.R4d5#
- 1...Qxf6
- 2.R6d5#
- 1...Bg6
- 2.Sxd7#
- 1...Bf7
- 2.Sxd7#
- 1...Sxd4
- 2.Qxd4#
- 1...Sxd6
- 2.Re4#
- 1...Sf4
- 2.R4d5#
- 1...a5
- 2.Qb5#
- 1...dxc6
- 2.Re6#
- 1...gxf6
- 2.R6d5#
- 1...Qf4
- Tries
- 1.c5?
- threat
- 2.Re4#
- 1...Sxd4
- 2.Qxd4#
- 1...Sxd6!
- threat
- 1.cxd7?
- threat
- 2.Re6#
- 1...Bxd7+
- 2.Sxd7#
- 1...Qxf6
- 2.R6d5#
- 1...Sxd4
- 2.Qxd4#
- 1...Sxd6
- 2.Re4#
- 1...Sf4
- 2.R4d5#
- 1...Bf7!
- threat
- 1.c5?
- Keys
- 1.Qb8!
- threat
- 2.Re4#
- 1...Sxd4
- 2.Re6#
- 1...Sxd6
- 2.Qxd6#
- 1...Sxf6
- 2.R6d5#
- 1...Qf4
- 2.R4d5#
- threat
- 1.Qb8!
This is a version of 59806
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(g);SBLOCK::QAB(A)+R(E),DCHECK
- Q(g);SBLOCK,XP(I)::R1(H)
- B(k);N_GUARD::S(J),XP(h)
- S(d);OGATE,P_SPINS(d),XR(E)::QAB1(A),XS(d)
- S(d);SBLOCK,XR(H)::QAB(A)+R(E),DCHECK
- S(e);SBLOCK::QAB(A)+R(E),DCHECK
- P(f);N_GUARD::QAR(A)
- P(h);N_GUARD,XP(G)::R1(H)
- P(i);SBLOCK,XP(I)::R1(H)
- Tries
- Try
- P(D);
- Threat
- QAB(A)+R(E),DCHECK
- Vars
- S(d);OGATE,P_SPINS(d),XR(E)::QAB1(A),XS(d)
- Refutation
- S(d);XR(H)
- Try
- P(G);P_SPINP(G),XP(h)
- Threat
- R1(H)
- Vars
- B(k);CHECK,XP(G)::S(J),XB(k)
- Q(g);SBLOCK,XP(I)::R1(H)
- S(d);OGATE,P_SPINS(d),XR(E)::QAB1(A),XS(d)
- S(d);SBLOCK,XR(H)::QAB(A)+R(E),DCHECK
- S(e);SBLOCK::QAB(A)+R(E),DCHECK
- Refutation
- B(k);N_PINP(G)
- Try
- Actual
- Q(A);
- Threat
- R1(E)
- Vars
- S(d);SBLOCK,XR(E)::QAB(A)+R(H),DCHECK
- S(d);OGATE,P_SPINS(d),XR(H)::QAB1(A),XS(d)
- S(e);SBLOCK,XP(I)::QAB(A)+R(H),DCHECK
- Q(g);SBLOCK::R1(E)
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