MESON Chess Problem Database
Problem Display
PID: 7506 (3KN3/n2p1N1P/r1b1k3/RB6/2P3rp/3Q2Rq/6pB/8 w - - 0 1)
Buglos, Janos
The Problemist, 1990
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Kxf7
- 2.Qf5#
- 1...Rd4
- 2.Qg6#
- 1...Rg6
- 2.Qxg6#
- 1...Bf3
- 2.Qxd7#
- 1...Be4
- 2.Qxd7#
- 1...Bxb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Bb7
- 2.Qxd7#
- 1...Ba8
- 2.Qxd7#
- 1...Kxf7
- Tries
- 1.Sg5+?
- 1...Ke5
- 2.Re3#
- 1...Rxg5!
- 1...Ke5
- 1.Bxc6?
- threat
- 2.Bd5#
- 2.Qf5#
- 2.Qd5#
- 2.Qxd7#
- 1...Kxf7
- 2.Qf5#
- 1...Rxg3
- 2.Bd5#
- 2.Qd5#
- 2.Qxd7#
- 1...Rxc4
- 2.Sg5#
- 2.Bd5#
- 2.Qg6#
- 2.Qd5#
- 2.Qxd7#
- 1...Rxa5
- 2.Qxd7#
- 1...Rxc6
- 2.Qf5#
- 2.Qd5#
- 2.Qxd7#
- 1...dxc6
- 2.Qf5#
- 2.Qd7#
- 1...Rd4
- 2.Sg5#
- 2.Qg6#
- 1...Re4
- 2.Sg5#
- 2.Qd5#
- 2.Qxd7#
- 1...Rf4
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 2.Qxd7#
- 1...Rg5
- 2.Sxg5#
- 2.Qxd7#
- 1...Rg6
- 2.Bd5#
- 2.Qxg6#
- 2.Qd5#
- 2.Qxd7#
- 1...Rg7
- 2.Bd5#
- 2.Qd5#
- 2.Qxd7#
- 1...Rg8
- 2.Bd5#
- 2.Qd5#
- 2.Qxd7#
- 1...Sb5
- 2.Bd5#
- 2.Qd5#
- 2.Qxd7#
- 1...d5
- 2.Bxd5#
- 2.Qxd5#
- 1...d6
- 2.Bd5#
- 2.Qf5#
- 2.Qd5#
- 1...Sxc6+!
- threat
- 1.Rxa6?
- threat
- 2.Qd5#
- 2.Qxd7#
- 1...Kxf7
- 2.Qf5#
- 1...Rxc4
- 2.Qxd7#
- 1...Rd4
- 2.Qg6#
- 1...Rg5
- 2.Qxd7#
- 1...d5
- 2.Qxd5#
- 1...d6!
- threat
- 1.Qd6+?
- 1...Kxf7
- 2.Qf6#
- 1...Kf5!
- 1...Kxf7
- 1.h8Q?
- threat
- 2.Qf6#
- 1...Kxf7
- 2.Qf5#
- 1...Rf4
- 2.Sg5#
- 1...Rg6
- 2.Qxg6#
- 1...Rg7!
- threat
- 1.Sg5+?
- Keys
- 1.Sh6!
- threat
- 2.Qf5#
- 2.Qd6#
- 1...Ke5
- 2.Re3#
- 1...Qxg3
- 2.Qf5#
- 1...Rxg3
- 2.Qd6#
- 1...Rxc4
- 2.Rg6#
- 2.Qd6#
- 1...Bxb5
- 2.Qf5#
- 2.Qd5#
- 1...Sxb5
- 2.Qf5#
- 1...Rd4
- 2.Rg6#
- 1...Re4
- 2.Rg6#
- 2.Qd6#
- 1...Rf4
- 2.Qd6#
- 1...Rg5
- 2.Qd6#
- 1...Rg6
- 2.Rxg6#
- 2.Qd6#
- 1...Rg7
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Bf3
- 2.Bxd7#
- 2.Qf5#
- 1...Be4
- 2.Bxd7#
- 1...Bd5
- 2.Qf5#
- 2.Qxd5#
- 1...Bb7
- 2.Bxd7#
- 2.Qf5#
- 1...Ba8
- 2.Bxd7#
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...d5
- 2.Qf5#
- 1...d6
- 2.Qf5#
- 2.Qxd6#
- threat
- 1.Sh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 10
- REMOVED MATES = 7
- Sets
- K(g);S_FLIGHT,XS(G)::QAR2(B)
- R(c);N_GUARD::QAR2(B)
- R(c);N_GUARD::QAR2(B),XR(c)
- B(f);N_GUARD::QAB1(B),XP(i)
- B(f);N_GUARD,XB(F)::QAB1(B)
- B(f);N_GUARD::QAB1(B),XB(f)
- Tries
- Try
- S(G);CHECK
- Vars
- K(g);P-FLIGHT::B(A)+R(C),DCHECK
- Refutation
- R(c);XS(G)
- Try
- B(F);XB(f)
- Threat
- DUALS(4)
- Vars
- K(g);S_FLIGHT,XS(G)::QAR2(B)
- R(e);XR(E)::QAB1(B),XP(i)
- Refutation
- S(h);CHECK,XB(F)
- Try
- R(E);P_PINB(f),XR(e)
- Threat
- DUALS(2)
- Vars
- K(g);N_SPINB(f),S_FLIGHT,XS(G)::QAR2(B)
- R(c);XP(D)::QAB1(B),XP(i)
- R(c);N_GUARD::QAR2(B)
- R(c);::QAB1(B),XP(i)
- P(i);::QAB1(B),XP(i)
- Refutation
- P(i);N_SPINB(f)
- Try
- Q(B);CHECK
- Vars
- K(g);OGATE,S_FLIGHT,XS(G)::QAR1(B)
- Refutation
- K(g);S_FLIGHT
- Try
- P(H);
- Threat
- QAR1(H)
- Vars
- K(g);S_FLIGHT,XS(G)::QAR2(B)
- R(c);N_GUARD::S(G)
- R(c);N_GUARD::QAR2(B),XR(c)
- Refutation
- R(c);
- Try
- Actual
- S(G);
- Threat
- DUALS(2)
- Vars
- K(g);P-FLIGHT::B(A)+R(C),DCHECK
- Q(b);XR(C)::QAB1(B)
- R(c);XR(C)::QAR1(B)
- S(h);XB(F)::QAB1(B)
- R(c);OGATE::R(C)
- R(c);::QAR1(B)
- R(c);P_PINS(J)::QAR1(B)
- B(f);OGATE::B(F),XP(i)
- S(h);::QAB1(B)
- P(i);::QAB1(B)
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