MESON Chess Problem Database
Problem Display
PID: 61854 (rq6/3B2p1/Q3p3/2RN4/P1P5/kP4R1/2K5/2N1B3 w - - 0 1)
Caillaud, Michel
Poisson, Christian
Rotenberg, Jacques
2nd Prize, Phenix, 1991
#2
11 + 5
SOLUTION
- SOUND
- Sets
- 1...Qxg3
- 2.Bb4#
- 1...Qf4
- 2.Bb4#
- 1...Qe5
- 2.Bb4#
- 1...Qd6
- 2.Bb4#
- 1...Qa7
- 2.Bb4#
- 2.b4#
- 1...Qc7
- 2.Bb4#
- 1...Qxb3+
- 2.Rxb3#
- 1...Qb4
- 2.Bxb4#
- 1...Qb5
- 2.b4#
- 1...Qb6
- 2.b4#
- 1...Qb7
- 2.b4#
- 1...Qc8
- 2.Bb4#
- 2.b4#
- 1...Qd8
- 2.Bb4#
- 2.b4#
- 1...Qe8
- 2.Bb4#
- 2.b4#
- 1...Qf8
- 2.Bb4#
- 1...Qg8
- 2.Bb4#
- 2.b4#
- 1...Qh8
- 2.Bb4#
- 2.b4#
- 1...e5
- 2.b4#
- 1...Qxg3
- Tries
- 1.Bb5?
- threat
- 2.Bb4#
- 1...Qxb5
- 2.b4#
- 1...exd5!
- threat
- 1.Rd3?
- threat
- 2.b4#
- 1...Qxb3+
- 2.Rxb3#
- 1...Qg3
- 2.Bb4#
- 1...Qe5
- 2.Bb4#
- 1...Qb4
- 2.Bxb4#
- 1...Qh2+!
- threat
- 1.Re3?
- threat
- 2.b4#
- 1...Qxb3+
- 2.Rxb3#
- 1...Qg3
- 2.Bb4#
- 1...Qf4
- 2.Bb4#
- 1...Qe5
- 2.Bb4#
- 1...Qb4
- 2.Bxb4#
- 1...Qh2+!
- threat
- 1.Rf3?
- threat
- 2.b4#
- 1...Qxb3+
- 2.Rxb3#
- 1...Qg3
- 2.Bb4#
- 1...Qf4
- 2.Bb4#
- 1...Qe5
- 2.Bb4#
- 1...Qb4
- 2.Bxb4#
- 1...Qf8
- 2.Bb4#
- 1...Qh2+!
- threat
- 1.Rb5?
- threat
- 2.Bb4#
- 1...Qxb5
- 2.b4#
- 1...Qd6
- 2.Qxd6#
- 1...Qf8!
- threat
- 1.Qb5?
- threat
- 2.Bb4#
- 1...Rxa4
- 2.Qxa4#
- 1...Qxb5!
- threat
- 1.Qb7?
- threat
- 2.Bb4#
- 1...Qxb7
- 2.b4#
- 1...Rxa4!
- threat
- 1.Qb6?
- threat
- 2.Bb4#
- 1...Qxb6
- 2.b4#
- 1...Rxa4!
- threat
- 1.Bb5?
- Keys
- 1.Qd6!
- threat
- 2.b4#
- 1...Qxb3+
- 2.Rxb3#
- 1...Qxd6
- 2.Bb4#
- 1...Qf8
- 2.Bb4#
- 1...Qb4
- 2.Bxb4#
- 1...Qb5
- 2.Rxb5#
- threat
- 1.Qd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(e);N_GUARD,XR(E)::B(B)
- Q(e);N_GUARD::B(B)
- Q(e);CHECK,OGATE,P_SPINQ(e),XP(D)::R1(E),XQ(e)
- Q(e);N_GUARD::B(B),XQ(e)
- Q(e);N_GUARD::R(E)+P(D)
- P(b);S_CUTQ(e)::R(E)+P(D)
- Tries
- Try
- B(K);
- Threat
- B(B)
- Vars
- Q(e);N_GUARD,XB(K)::R(E)+P(D)
- Refutation
- P(b);XS(I)
- Try
- R(E);
- Threat
- R(E)+P(D)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XP(D)::R1(E),XQ(e)
- Q(e);N_GUARD::B(B)
- Q(e);N_GUARD::B(B),XQ(e)
- Refutation
- Q(e);CHECK
- Try
- R(E);
- Threat
- R(E)+P(D)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XP(D)::R1(E),XQ(e)
- Q(e);N_GUARD::B(B)
- Q(e);N_GUARD::B(B),XQ(e)
- Refutation
- Q(e);CHECK
- Try
- R(E);
- Threat
- R(E)+P(D)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XP(D)::R1(E),XQ(e)
- Q(e);N_GUARD::B(B)
- Q(e);N_GUARD::B(B),XQ(e)
- Refutation
- Q(e);CHECK
- Try
- R(H);
- Threat
- B(B)
- Vars
- Q(e);N_GUARD,XR(H)::R(E)+P(D)
- Q(e);N_GUARD::QAB(J),XQ(e)
- Refutation
- Q(e);
- Try
- Q(J);
- Threat
- B(B)
- Vars
- R(d);OGATE,XP(F)::QAR1(J),XR(d)
- Refutation
- Q(e);XQ(J)
- Try
- Q(J);
- Threat
- B(B)
- Vars
- Q(e);N_GUARD,XQ(J)::R(E)+P(D)
- Refutation
- R(d);XP(F)
- Try
- Q(J);
- Threat
- B(B)
- Vars
- Q(e);N_GUARD,XQ(J)::R(E)+P(D)
- Refutation
- R(d);XP(F)
- Try
- Actual
- Q(J);
- Threat
- R(E)+P(D)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XP(D)::R1(E),XQ(e)
- Q(e);N_GUARD,XQ(J)::B(B)
- Q(e);N_GUARD::B(B)
- Q(e);N_GUARD::B(B),XQ(e)
- Q(e);N_GUARD::QAB(J)+R(H),XQ(e)
Developed and maintained by Brian Stephenson.
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