MESON Chess Problem Database
Problem Display
PID: 198073 (5r2/p2BpR2/b2P4/P2k1P1N/1Q2R1r1/3P2B1/N2K4/b7 w - - 0 1)
Beal, Edward W
The Problemist, 1982
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxg3
- 2.Sf4#
- 1...Rxe4
- 2.dxe4#
- 1...Rf4
- 2.Sxf4#
- 1...Rg5
- 2.Sf4#
- 1...Rg6
- 2.Sf4#
- 1...Rg7
- 2.Sf4#
- 1...Rgg8
- 2.Sf4#
- 1...Bc3+
- 2.Sxc3#
- 1...Bd4
- 2.Qxd4#
- 1...Be5
- 2.Rxe5#
- 1...Bc4
- 2.Qxc4#
- 1...Bb5
- 2.Qxb5#
- 1...Bb7
- 2.Qc4#
- 2.Qb5#
- 1...Bc8
- 2.Qc4#
- 2.Qb5#
- 1...exd6
- 2.Qxd6#
- 1...e5
- 2.Sf6#
- 1...Rxg3
- Tries
- 1.Bb5?
- threat
- 2.Qc4#
- 1...Bc3+
- 2.Sxc3#
- 1...Rxg3
- 2.Sf4#
- 1...Rxe4
- 2.dxe4#
- 1...Bxb5
- 2.Qxb5#
- 1...Rf4
- 2.Sxf4#
- 1...Be5
- 2.Rxe5#
- 1...e5
- 2.Sf6#
- 1...Rc8!
- threat
- 1.Qc3?
- threat
- 2.Sb4#
- 2.Bc6#
- 2.Be6#
- 2.Qc6#
- 1...Rxg3
- 2.Qc6#
- 1...Rxe4
- 2.Bc6#
- 1...Bxd3
- 2.Bc6#
- 2.Qc6#
- 1...Rf4
- 2.Qc6#
- 1...Bc4
- 2.Qxc4#
- 1...e5
- 2.Qc6#
- 1...Rg6
- 2.Sb4#
- 2.Bc6#
- 2.Rd4#
- 2.Qc6#
- 1...Rb8
- 2.Bc6#
- 2.Be6#
- 2.Qc6#
- 1...Rc8
- 2.Sb4#
- 2.Be6#
- 1...Bb5
- 2.Sb4#
- 2.Be6#
- 1...Bb7
- 2.Sb4#
- 2.Be6#
- 2.Qc4#
- 1...Bc8
- 2.Sb4#
- 2.Bc6#
- 2.Qc4#
- 2.Qc6#
- 1...e6
- 2.Sb4#
- 2.Sf6#
- 2.Bc6#
- 2.Bxe6#
- 2.Qc6#
- 1...Bxc3+!
- threat
- 1.Qb3+?
- 1...Bc4
- 2.Qxc4#
- 1...Kc5!
- 1...Bc4
- 1.Qb6?
- threat
- 2.Sb4#
- 2.Bc6#
- 2.Be6#
- 2.Qc6#
- 1...Bc3+
- 2.Sxc3#
- 1...Rxg3
- 2.Sb4#
- 2.Sf4#
- 2.Be6#
- 2.Qc6#
- 1...Rxe4
- 2.Bc6#
- 1...Bxd3
- 2.Bc6#
- 2.Qc6#
- 1...Rf4
- 2.Sb4#
- 2.Sxf4#
- 2.Be6#
- 2.Qc6#
- 1...Rg6
- 2.Sb4#
- 2.Sf4#
- 2.Bc6#
- 2.Qc6#
- 1...Rc8
- 2.Sb4#
- 2.Be6#
- 1...Be5
- 2.Sb4#
- 2.Be6#
- 2.Rxe5#
- 2.Qc6#
- 1...Bb5
- 2.Sb4#
- 2.Be6#
- 2.Qxb5#
- 1...Bb7
- 2.Sb4#
- 2.Be6#
- 2.Qb5#
- 1...Bc8
- 2.Sb4#
- 2.Bc6#
- 2.Qb5#
- 2.Qc6#
- 1...e5
- 2.Sb4#
- 2.Sf6#
- 2.Be6#
- 2.Qc6#
- 1...e6
- 2.Sb4#
- 2.Bc6#
- 2.Bxe6#
- 2.Qc6#
- 1...axb6!
- threat
- 1.Qb7+?
- 1...Kc5
- 2.Qc6#
- 1...Bxb7!
- 1...Kc5
- 1.dxe7?
- threat
- 2.Qd6#
- 1...Bc3+
- 2.Sxc3#
- 1...Rxg3
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 1...Rg6
- 2.Sf4#
- 1...Be5
- 2.Rxe5#
- 1...Bxd3!
- threat
- 1.Bb5?
- Keys
- 1.d4!
- threat
- 2.Re5#
- 1...Bc3+
- 2.Sxc3#
- 1...Kxe4
- 2.Bc6#
- 1...Rxe4
- 2.Qc5#
- 1...Bxd4
- 2.Qxd4#
- 1...exd6
- 2.Sf6#
- 1...Bc4
- 2.Qb7#
- 1...e5
- 2.Sf6#
- 2.Rxe5#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- R(b);N_GUARD,XB(D)::S(I)
- R(b);OGATE,XR(F)::P(C),XR(b)
- R(b);N_GUARD::S(I),XR(b)
- R(b);N_GUARD::S(I)
- B(a);CHECK,N_GUARD::S(A),XB(a)
- B(a);N_GUARD::QAR1(E),XB(a)
- B(a);N_GUARD::R1(F),XB(a)
- B(d);N_GUARD::QAB1(E),XB(d)
- B(d);N_GUARD::QAR2(E),XB(d)
- P(f);OGATE,XP(J)::QAR1(E),XP(f)
- P(f);N_GUARD,S_CUTB(a)::S(I)
- Tries
- Try
- B(K);
- Threat
- QAB1(E)
- Vars
- B(a);CHECK,N_GUARD::S(A),XB(a)
- R(b);N_GUARD,XB(D)::S(I)
- R(b);OGATE,XR(F)::P(C),XR(b)
- B(d);OGATE,XB(K)::QAR2(E),XB(d)
- R(b);N_GUARD::S(I),XR(b)
- B(a);N_GUARD::R1(F),XB(a)
- P(f);N_GUARD,S_CUTB(a)::S(I)
- Refutation
- R(g);
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- R(b);XB(D)::QAB1(E)
- R(b);XR(F)::B(K)
- R(b);::QAB1(E)
- B(d);N_GUARD::QAB1(E),XB(d)
- P(f);::QAB1(E)
- Refutation
- B(a);CHECK,XQ(E)
- Try
- Q(E);CHECK
- Vars
- B(d);N_GUARD,P_SPINB(d)::QAB1(E),XB(d)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- B(a);CHECK,N_GUARD::S(A),XB(a)
- R(b);XR(F)::B(K)
- Refutation
- P(e);XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(E)
- Refutation
- B(d);XQ(E)
- Try
- P(J);XP(f)
- Threat
- QAR1(E)
- Vars
- B(a);CHECK,N_GUARD::S(A),XB(a)
- R(b);N_GUARD,XB(D)::S(I)
- R(b);N_GUARD::S(I),XR(b)
- R(b);N_GUARD::S(I)
- B(a);N_GUARD::R1(F),XB(a)
- Refutation
- B(d);XP(C)
- Try
- Actual
- P(C);
- Threat
- R1(F)
- Vars
- B(a);CHECK,N_GUARD::S(A),XB(a)
- K(c);S_FLIGHT,XR(F)::B(K)
- R(b);SBLOCK,XR(F)::QAR1(E)
- B(a);OGATE,XP(C)::QAR1(E),XB(a)
- P(f);N_GUARD,XP(J)::S(I)
- B(d);N_GUARD,SBLOCK::QAB(E)
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