MESON Chess Problem Database
Problem Display
PID: 200800 (1B2N3/1P1Qr2r/1q3P2/6Rp/N1b1kp2/2P1p1n1/4P1K1/4b3 w - - 0 1)
Courthiau, Bernard
diagrammes, 1974
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Qxd4#
- 1...Qa5
- 2.Sd6#
- 2.Qd4#
- 1...Qc5
- 2.Sxc5#
- 1...Qa7
- 2.Sd6#
- 1...Qc7
- 2.Qd4#
- 1...Qd8
- 2.Sc5#
- 2.Sd6#
- 1...Qb1
- 2.Sc5#
- 2.Sd6#
- 2.Qd4#
- 1...Qb2
- 2.Sc5#
- 2.Sd6#
- 2.Qd4#
- 1...Qb3
- 2.Sc5#
- 2.Sd6#
- 2.Qd4#
- 1...Qb4
- 2.Qd4#
- 1...Qb5
- 2.Sd6#
- 2.Qd4#
- 1...Qa6
- 2.Sc5#
- 2.Qd4#
- 1...Qc6
- 2.Qd4#
- 1...Qd6
- 2.Sxd6#
- 1...Qe6
- 2.Sc5#
- 2.Qd4#
- 1...Qxf6
- 2.Sc5#
- 2.Sxf6#
- 1...Qxb7
- 2.Sc5#
- 2.Sd6#
- 2.Qd4#
- 1...Re5
- 2.Rxe5#
- 1...Rxd7
- 2.Re5#
- 1...Ref7
- 2.Re5#
- 1...Reg7
- 2.Re5#
- 1...Bxc3
- 2.Sxc3#
- 1...Ba2
- 2.Qd3#
- 1...Bxe2
- 2.Qd5#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 2.Qd5#
- 2.exd3#
- 1...Bb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Ba6
- 2.Qd5#
- 1...Be6
- 2.Re5#
- 2.Qd3#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...Sf1
- 2.Qf5#
- 1...Sh1
- 2.Qf5#
- 1...Sxe2
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...f3+
- 2.exf3#
- 1...Qd4
- Tries
- 1.Sxb6?
- threat
- 2.Sd6#
- 2.Qd4#
- 1...f3+
- 2.exf3#
- 1...Rxd7
- 2.Re5#
- 1...Rxe8
- 2.Qd4#
- 1...Bxe2
- 2.Qd4#
- 2.Qd5#
- 1...Sxe2
- 2.Qf5#
- 1...Re6
- 2.Qd4#
- 1...Bd5
- 2.Sd6#
- 2.Qxd5#
- 1...Sf5
- 2.Qxf5#
- 1...Bxc3!
- threat
- 1.Qc6+?
- 1...Bd5
- 2.Sd6#
- 2.Qxd5#
- 1...Qxc6!
- 1...Bd5
- 1.Qe6+?
- 1...Qxe6
- 2.Sc5#
- 1...Bxe6
- 2.Re5#
- 1...Rxe6!
- 1...Qxe6
- 1.Qxe7+?
- 1...Qe6
- 2.Sc5#
- 2.Sd6#
- 1...Be6
- 2.Re5#
- 1...Rxe7!
- 1...Qe6
- 1.fxe7?
- threat
- 2.Re5#
- 1...f3+
- 2.exf3#
- 1...Bxc3
- 2.Sxc3#
- 1...Qd4
- 2.Qxd4#
- 1...Qa5
- 2.Sd6#
- 2.Sf6#
- 2.Qd4#
- 1...Qc5
- 2.Sxc5#
- 2.Sf6#
- 1...Qc7
- 2.Sf6#
- 2.Qd4#
- 1...Qb5
- 2.Sd6#
- 2.Sf6#
- 2.Qd4#
- 1...Qd6
- 2.Sxd6#
- 1...Qe6
- 2.Sc5#
- 2.Qd4#
- 1...Qf6
- 2.Sc5#
- 2.Sxf6#
- 1...Sf5
- 2.Qxf5#
- 1...Rxe7!
- threat
- 1.Sxb6?
- Keys
- 1.Rc5!
- threat
- 2.Qd4#
- 1...f3+
- 2.exf3#
- 1...Qxc5
- 2.Sxc5#
- 1...Qxf6
- 2.Sxf6#
- 1...Rxd7
- 2.Re5#
- 1...Bxc3
- 2.Sxc3#
- 1...Sxe2
- 2.Qf5#
- 1...Qd8
- 2.Sd6#
- 2.Rxc4#
- 1...Qd6
- 2.Sxd6#
- 1...Re5
- 2.Rxe5#
- 1...Bd5
- 2.Qxd5#
- 1...Sf5
- 2.Qxf5#
- threat
- 1.Rc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- Q(h);N_GUARD::QAR1(H),XQ(h)
- Q(h);N_GUARD::S(D),XQ(h)
- Q(h);N_GUARD::S(J)
- Q(h);N_GUARD::QAR1(H)
- Q(h);N_GUARD::S(J),XQ(h)
- R(i);N_GUARD::R1(E),XR(i)
- R(i);N_GUARD,XQ(H)::R1(E)
- R(i);N_GUARD::R1(E)
- B(a);XP(C)::S(D),XB(a)
- B(d);N_GUARD::QAB1(H)
- B(d);N_GUARD,XP(A)::QAB1(H)
- B(d);N_GUARD::QAB1(H),XB(d)
- S(c);N_GUARD::QAB1(H)
- S(c);N_GUARD,XP(A)::QAB1(H)
- S(c);N_GUARD::QAB1(H),XS(c)
- P(f);CHECK,OGATE::P(A),XP(f)
- Tries
- Try
- S(D);XQ(h)
- Threat
- DUALS(2)
- Vars
- P(f);CHECK,OGATE::P(A),XP(f)
- R(i);N_GUARD,XQ(H)::R1(E)
- R(i);XS(J)::QAR1(H)
- S(c);N_GUARD,XP(A)::QAB1(H)
- R(i);::QAR1(H)
- S(c);N_GUARD::QAB1(H),XS(c)
- Refutation
- B(a);XP(C)
- Try
- Q(H);CHECK
- Refutation
- Q(h);XQ(H)
- Try
- Q(H);CHECK
- Vars
- Q(h);XQ(H)::S(D)
- B(d);XQ(H)::R1(E)
- Refutation
- R(i);XQ(H)
- Try
- Q(H);CHECK,XR(i)
- Vars
- B(d);P_SPINB(d)::R1(E)
- Refutation
- R(j);XQ(H)
- Try
- P(F);XR(i)
- Threat
- R1(E)
- Vars
- P(f);CHECK,OGATE::P(A),XP(f)
- B(a);XP(C)::S(D),XB(a)
- Q(h);N_GUARD::QAR1(H),XQ(h)
- Q(h);N_GUARD::S(J),XQ(h)
- S(c);N_GUARD::QAB1(H),XS(c)
- Refutation
- R(j);XP(F)
- Try
- Actual
- R(E);
- Threat
- QAR1(H)
- Vars
- P(f);CHECK,OGATE::P(A),XP(f)
- Q(h);XR(E)::S(D),XQ(h)
- Q(h);XP(F)::S(J),XQ(h)
- R(i);N_GUARD,XQ(H)::R1(E)
- B(a);XP(C)::S(D),XB(a)
- S(c);N_GUARD,XP(A)::QAB1(H)
- Q(h);N_GUARD::S(J),XQ(h)
- R(i);N_GUARD::R1(E),XR(i)
- B(d);N_GUARD::QAB1(H),XB(d)
- S(c);N_GUARD::QAB1(H),XS(c)
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