MESON Chess Problem Database
Problem Display
PID: 188353 (8/2Qpp1K1/4B3/3p3p/3krNR1/b2p1PB1/3P4/q1R4n w - - 0 1)
Spiess, Jean-Yves
Phenix, 1992
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Qxc3#
- 1...Qb1
- 2.Qc3#
- 1...Qa2
- 2.Qc3#
- 1...Re1
- 2.Se2#
- 1...Re2
- 2.Sxe2#
- 1...Re3
- 2.Se2#
- 1...Rxf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Re5
- 2.Se2#
- 1...Rxe6
- 2.Se2#
- 2.Sxe6#
- 1...dxe6
- 2.Sxe6#
- 1...Qc3
- Tries
- 1.Sxd5?
- threat
- 2.Be5#
- 2.Rc4#
- 2.Rxe4#
- 2.Qe5#
- 2.Qc4#
- 1...Qxc1
- 2.Be5#
- 2.Rxe4#
- 1...Bxc1
- 2.Be5#
- 2.Rxe4#
- 1...Sxg3
- 2.Rc4#
- 1...hxg4
- 2.Rc4#
- 2.Qc4#
- 1...dxe6
- 2.Qe5#
- 2.Qc4#
- 1...Qc3
- 2.Be5#
- 2.Rxe4#
- 2.Qxc3#
- 2.dxc3#
- 1...Qa2
- 2.Be5#
- 2.Rxe4#
- 2.Qe5#
- 2.Qc3#
- 1...Rf4
- 2.Rc4#
- 2.Rxf4#
- 2.Qxf4#
- 1...Bc5
- 2.Be5#
- 2.Rxe4#
- 2.Qe5#
- 2.Qxc5#
- 1...Bd6
- 2.Rc4#
- 2.Rxe4#
- 2.Qc4#
- 1...Sf2
- 2.Bxf2#
- 2.Be5#
- 2.Rc4#
- 2.Qe5#
- 2.Qc4#
- 1...d6
- 2.Rc4#
- 2.Rxe4#
- 2.Qc4#
- 1...Rxg4+!
- threat
- 1.Bf2+?
- 1...Re3
- 2.Se2#
- 2.Sxh5#
- 2.Bxe3#
- 2.dxe3#
- 1...Sxf2!
- 1...Re3
- 1.Bxd7?
- threat
- 2.Se6#
- 1...Rxf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Re6
- 2.Se2#
- 2.Sxe6#
- 1...e6
- 2.Sxe6#
- 1...hxg4!
- threat
- 1.Rg5?
- threat
- 2.Rxd5#
- 1...Qa2
- 2.Qc3#
- 1...Re5
- 2.Qxe5#
- 1...dxe6!
- threat
- 1.Qe5+?
- 1...Rxe5
- 2.Se2#
- 1...Kxe5!
- 1...Rxe5
- 1.Qb6+?
- 1...Ke5
- 2.Sxd3#
- 2.Sg6#
- 2.Rg5#
- 1...Bc5!
- 1...Ke5
- 1.Qc4+?
- 1...Ke5
- 2.Qxd5#
- 1...dxc4!
- 1...Ke5
- 1.Qc5+?
- 1...Ke5
- 2.Rg5#
- 2.Qxd5#
- 1...Bxc5!
- 1...Ke5
- 1.Qc6?
- threat
- 2.Qxd5#
- 1...Ke5
- 2.Qxd5#
- 1...dxe6
- 2.Sxe6#
- 1...Qa2
- 2.Qc3#
- 1...Re5
- 2.Se2#
- 1...dxc6!
- threat
- 1.Qa7+?
- 1...Bc5
- 2.Qxa1#
- 1...Ke5!
- 1...Bc5
- 1.Qb7?
- threat
- 2.Qxd5#
- 1...Ke5
- 2.Qxd5#
- 1...dxe6
- 2.Sxe6#
- 1...Re5
- 2.Se2#
- 1...Qa2!
- threat
- 1.Sxd5?
- Keys
- 1.Qa5!
- threat
- 2.Qxd5#
- 1...Ke5
- 2.Qxd5#
- 1...dxe6
- 2.Sxe6#
- 1...Qa2
- 2.Qc3#
- 1...Re5
- 2.Se2#
- 1...Bc5
- 2.Qxa1#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(a);N_GUARD::QAB1(H),XQ(a)
- Q(a);N_GUARD::QAB1(H)
- R(f);::R(F)+S(E),DCHECK
- R(f);::R(F)+S(E),DCHECK,XR(f)
- P(i);XB(G)::S(E),XP(i)
- Tries
- Try
- S(E);P_PINR(f),XP(g)
- Threat
- DUALS(5)
- Vars
- S(b);XB(D)::R1(A)
- Refutation
- R(f);CHECK,N_SPINR(f),XR(F)
- Try
- B(D);CHECK
- Refutation
- S(b);XB(D)
- Try
- B(G);XP(i)
- Threat
- S(E)
- Vars
- P(j);::S(E),XP(j)
- Refutation
- P(h);XR(F)
- Try
- R(F);
- Threat
- R1(F),XP(g)
- Vars
- Q(a);N_GUARD::QAB1(H)
- R(f);N_GUARD::QAB1(H),XR(f)
- Refutation
- P(i);XB(G)
- Try
- Q(H);CHECK
- Vars
- R(f);XQ(H)::R(F)+S(E),DCHECK
- Refutation
- K(e);S_FLIGHT,XQ(H)
- Try
- Q(H);CHECK
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(H);CHECK
- Vars
- K(e);S_FLIGHT::QAR1(H),XP(g)
- Refutation
- P(g);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- B(c);XQ(H)
- Try
- Q(H);
- Threat
- QAR1(H),XP(g)
- Vars
- K(e);S_FLIGHT::QAR1(H),XP(g)
- P(i);XB(G)::S(E),XP(i)
- Q(a);N_GUARD::QAB1(H)
- R(f);::R(F)+S(E),DCHECK
- Refutation
- P(i);XQ(H)
- Try
- Q(H);CHECK
- Vars
- B(c);OGATE,P_SPINB(c)::QAB(H),XQ(a)
- Refutation
- K(e);S_FLIGHT
- Try
- Q(H);
- Threat
- QAR1(H),XP(g)
- Vars
- K(e);S_FLIGHT::QAR1(H),XP(g)
- P(i);XB(G)::S(E),XP(i)
- R(f);::R(F)+S(E),DCHECK
- Refutation
- Q(a);
- Try
- Actual
- Q(H);
- Threat
- QAR1(H),XP(g)
- Vars
- K(e);P_SPINP(g),S_FLIGHT::QAR1(H),XP(g)
- P(i);XB(G)::S(E),XP(i)
- Q(a);N_GUARD::QAB1(H)
- R(f);::R(F)+S(E),DCHECK
- B(c);OGATE::QAB(H),XQ(a)
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