MESON Chess Problem Database
Problem Display
PID: 52254 (4R2B/1p3p2/b1p3NK/1Q1ppk2/2P2N1P/3n1P1P/4P3/4b3 w - - 0 1)
Cheylan, Yves
The Problemist, 1989
#2
11 + 9
| 102 | Probleemblad | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Rxe5#
- 1...Sb2
- 2.Rxe5#
- 1...Sf2
- 2.Rxe5#
- 1...Sb4
- 2.Rxe5#
- 1...Sxf4
- 2.Rxe5#
- 1...Sc5
- 2.Rxe5#
- 1...dxc4
- 2.e4#
- 1...e4
- 2.fxe4#
- 1...c5
- 2.Qd7#
- 1...fxg6
- 2.Rf8#
- 1...Sc1
- Tries
- 1.Sxd5?
- threat
- 2.Se3#
- 2.e4#
- 1...cxd5
- 2.Qd7#
- 1...fxg6
- 2.e4#
- 1...Bf2
- 2.e4#
- 1...Sf2
- 2.Se3#
- 2.Rxe5#
- 1...Sc5
- 2.Se3#
- 2.Rxe5#
- 1...e4
- 2.Se3#
- 2.fxe4#
- 1...Bd2+!
- threat
- 1.Qxc6?
- threat
- 2.Qd7#
- 2.Qf6#
- 2.Qc8#
- 1...Bxh4
- 2.Qd7#
- 2.Qc8#
- 1...Sxf4
- 2.Se7#
- 2.Rxe5#
- 2.Qf6#
- 1...fxg6
- 2.Rf8#
- 2.Qf6#
- 1...Bb5
- 2.Qf6#
- 1...Sc5
- 2.Rxe5#
- 2.Qf6#
- 1...b5
- 2.Qd7#
- 2.Qf6#
- 1...b6
- 2.Qd7#
- 2.Qf6#
- 1...f6
- 2.Qd7#
- 2.Qe6#
- 2.Qxf6#
- 2.Qc8#
- 1...bxc6!
- threat
- 1.Qxd5?
- threat
- 2.Qe4#
- 2.Qxf7#
- 2.Qd7#
- 2.e4#
- 1...Bxh4
- 2.Qe4#
- 2.Qd7#
- 2.e4#
- 1...Bxc4
- 2.Qe4#
- 2.e4#
- 1...Sxf4
- 2.Se7#
- 2.Rxe5#
- 2.Qe4#
- 2.Qxf7#
- 2.Qxe5#
- 2.e4#
- 1...fxg6
- 2.Rf8#
- 2.Qe4#
- 2.Qf7#
- 1...Sf2
- 2.Rxe5#
- 2.Qxf7#
- 2.Qxe5#
- 2.Qd7#
- 1...Sc5
- 2.Rxe5#
- 2.Qxf7#
- 2.Qxe5#
- 1...f6
- 2.Qe4#
- 2.Qe6#
- 2.Qd7#
- 2.e4#
- 1...cxd5!
- threat
- 1.Qxb7?
- threat
- 2.Qd7#
- 2.Qxf7#
- 1...Bxh4
- 2.Qd7#
- 1...Sxf4
- 2.Rxe5#
- 2.Qxf7#
- 1...fxg6
- 2.Rf8#
- 2.Qf7#
- 1...Sc5
- 2.Rxe5#
- 2.Qxf7#
- 1...f6
- 2.Qd7#
- 1...Bxb7!
- threat
- 1.e3?
- threat
- 2.Se7#
- 1...Bxh4
- 2.Sxh4#
- 1...Sxf4
- 2.Rxe5#
- 1...exf4
- 2.e4#
- 1...fxg6
- 2.Rf8#
- 1...Bb4!
- threat
- 1.Sxd5?
- Keys
- 1.cxd5!
- threat
- 2.e4#
- 1...exf4
- 2.Se7#
- 1...cxd5
- 2.Qd7#
- 1...fxg6
- 2.Rf8#
- 1...Sf2
- 2.Rxe5#
- 1...Sc5
- 2.Rxe5#
- 1...e4
- 2.fxe4#
- threat
- 1.cxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- S(b);N_GUARD::R1(J),XP(d)
- S(b);N_GUARD,XS(E)::R1(J),XP(d)
- P(c);N_GUARD,P_SPINP(d),XP(D)::P(A)
- P(d);OGATE,P_SPINP(c)::P(B),XP(d)
- P(g);OGATE::QAB(G)
- P(i);OGATEB,XS(H)::R(J)
- Tries
- Try
- S(E);XP(c)
- Threat
- DUALS(2)
- Vars
- P(g);OGATE,XS(E)::QAB(G)
- P(i);XS(H)::P(A)
- B(a);::P(A)
- Refutation
- B(a);CHECK
- Try
- Q(G);XP(g)
- Threat
- DUALS(3)
- Vars
- B(f);::QAR1(G)
- Refutation
- P(h);XQ(G)
- Try
- Q(G);P_PINP(d),XP(c)
- Threat
- DUALS(4)
- Refutation
- P(g);N_SPINP(d),XQ(G)
- Try
- Q(G);XP(h)
- Threat
- DUALS(2)
- Vars
- B(a);XP(F)::QAB(G)
- P(i);::QAB(G)
- Refutation
- B(f);XQ(G)
- Try
- P(A);
- Threat
- S(H)
- Vars
- B(a);XP(F)::S(H),XB(a)
- S(b);N_GUARD,XS(E)::R1(J),XP(d)
- P(d);P_SPINP(c),XS(E)::P(A)
- P(i);OGATEB,XS(H)::R(J)
- Refutation
- B(a);
- Try
- Actual
- P(D);XP(c)
- Threat
- P(A)
- Vars
- P(d);SBLOCK,XS(E)::S(H)
- P(g);OGATE,XP(D)::QAB(G)
- P(i);OGATEB,XS(H)::R(J)
- S(b);N_GUARD::R1(J),XP(d)
- P(d);OGATE::P(B),XP(d)
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