MESON Chess Problem Database
Problem Display
PID: 870 (3N4/1p6/1P1p2Bn/2Pkp3/1p2R3/3K1p2/5B2/n2Q4 w - - 0 1)
Lewis, Robert Tony
British Chess Magazine, 1993
#2
8 + 8
| 1996 | BCSC Starter | 1993-1994 |
| 6388 | ChessMoves | 2005 |
| 133 | The Problemist Supplement | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Sc2
- 2.Kxc2#
- 1...Sb3
- 2.Qxb3#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sg8
- 2.Bf7#
- 1...b3
- 2.Kc3#
- 1...dxc5
- 2.Ke3#
- 1...Sc2
- Tries
- 1.Kd2?
- threat
- 2.Kc1#
- 2.Ke1#
- 1...Sb3+
- 2.Qxb3#
- 1...Sc2
- 2.Kxc2#
- 1...Sf5!
- threat
- 1.Bg1?
- 1...dxc5
- 2.Ke3#
- 1...Sc2
- 2.Kxc2#
- 1...Sb3
- 2.Qxb3#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sg8
- 2.Bf7#
- 1...b3
- 2.Kc3#
- 1...f2!
- 1...dxc5
- 1.Be3?
- 1...Sc2
- 2.Kxc2#
- 1...Sb3
- 2.Qxb3#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sg8
- 2.Bf7#
- 1...f2
- 2.Ke2#
- 1...b3
- 2.Kc3#
- 1...dxc5!
- 1...Sc2
- 1.Bf5?
- threat
- 2.Be6#
- 1...dxc5
- 2.Ke3#
- 1...Sxf5!
- threat
- 1.Bh7?
- 1...dxc5
- 2.Ke3#
- 1...Sc2
- 2.Kxc2#
- 1...Sb3
- 2.Qxb3#
- 1...Sg4
- 2.Bg8#
- 1...Sf5
- 2.Bg8#
- 1...Sg8
- 2.Bxg8#
- 1...b3
- 2.Kc3#
- 1...Sf7!
- 1...dxc5
- 1.Rxb4?
- threat
- 2.Kc3#
- 2.Be4#
- 1...dxc5
- 2.Kc3#
- 2.Ke3#
- 1...Sc2
- 2.Kxc2#
- 2.Be4#
- 1...Sb3
- 2.Be4#
- 2.Qxb3#
- 1...Sf5
- 2.Bf7#
- 1...e4+!
- threat
- 1.Rg4?
- threat
- 2.Be4#
- 1...dxc5
- 2.Ke3#
- 1...Sf5
- 2.Bf7#
- 1...e4+!
- threat
- 1.Rh4?
- threat
- 2.Be4#
- 1...dxc5
- 2.Ke3#
- 1...Sf5
- 2.Bf7#
- 1...e4+!
- threat
- 1.Rxe5+?
- 1...dxe5
- 2.Be4#
- 1...Kxe5!
- 1...dxe5
- 1.Qc2?
- threat
- 2.Qc4#
- 1...dxc5
- 2.Qxc5#
- 1...Sxc2!
- threat
- 1.Qxa1?
- 1...dxc5
- 2.Qxe5#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sg8
- 2.Bf7#
- 1...b3!
- 1...dxc5
- 1.Qc1?
- threat
- 2.Qc4#
- 1...dxc5
- 2.Qxc5#
- 1...Sc2!
- threat
- 1.Qd2?
- 1...dxc5
- 2.Ke3#
- 1...Sc2
- 2.Kxc2#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sg8
- 2.Bf7#
- 1...b3
- 2.Kc3#
- 1...Sb3!
- 1...dxc5
- 1.c6?
- 1...Sc2
- 2.Kxc2#
- 1...Sb3
- 2.Qxb3#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sg8
- 2.Bf7#
- 1...b3
- 2.Kc3#
- 1...bxc6!
- 1...Sc2
- 1.Kd2?
- Keys
- 1.Qa4!
- 1...dxc5
- 2.Qd7#
- 1...Sc2
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sg8
- 2.Bf7#
- 1...b3
- 2.Qc4#
- 1...dxc5
- 1.Qa4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);::QAR(A)+K(C),XS(a)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- P(c);::QAR(A)+K(C)
- P(f);SBLOCK,XP(E)::QAR(A)+K(C)
- Tries
- Try
- K(C);P-FLIGHT
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAB(A),XS(a)
- S(a);::QAR(A)+K(C),XS(a)
- Refutation
- S(g);
- Try
- B(B);
- Vars
- P(f);SBLOCK,XP(E)::QAR(A)+K(C)
- S(a);::QAR(A)+K(C),XS(a)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- P(c);::QAR(A)+K(C)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(a);::QAR(A)+K(C),XS(a)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- P(b);::QAR(A)+K(C)
- P(c);::QAR(A)+K(C)
- Refutation
- P(f);XP(E)
- Try
- B(G);
- Threat
- B(G)
- Vars
- P(f);SBLOCK,XP(E)::QAR(A)+K(C)
- Refutation
- S(g);XB(G)
- Try
- B(G);
- Vars
- P(f);SBLOCK,XP(E)::QAR(A)+K(C)
- S(a);::QAR(A)+K(C),XS(a)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- P(c);::QAR(A)+K(C)
- Refutation
- S(g);
- Try
- R(D);XP(c)
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD::B(G)
- Refutation
- P(e);CHECK
- Try
- R(D);
- Threat
- B(G)
- Vars
- P(f);SBLOCK,XP(E)::QAR(A)+K(C)
- S(g);N_GUARD::B(G)
- Refutation
- P(e);CHECK
- Try
- R(D);
- Threat
- B(G)
- Vars
- P(f);SBLOCK,XP(E)::QAR(A)+K(C)
- S(g);N_GUARD::B(G)
- Refutation
- P(e);CHECK
- Try
- R(D);CHECK,XP(e)
- Vars
- P(f);SBLOCK,XR(D)::B(G)
- Refutation
- K(d);P-FLIGHT,XR(D)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- P(f);OGATE,XP(E)::QAR1(A),XP(f)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);XS(a)
- Vars
- P(f);N_GUARD,XP(E)::QAR1(A),XP(e)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- P(f);OGATE,XP(E)::QAR1(A),XP(f)
- Refutation
- S(a);
- Try
- Q(A);
- Vars
- P(f);SBLOCK,XP(E)::QAR(A)+K(C)
- S(a);::QAR(A)+K(C),XS(a)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- P(c);::QAR(A)+K(C)
- Refutation
- S(a);
- Try
- P(E);
- Vars
- S(a);::QAR(A)+K(C),XS(a)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- P(c);::QAR(A)+K(C)
- Refutation
- P(h);XP(E)
- Try
- Actual
- Q(A);
- Vars
- P(f);OGATEB,XP(E)::QAR2(A)
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(G)
- S(g);N_GUARD::B(G),XS(g)
- P(c);OGATE::QAB1(A)
Developed and maintained by Brian Stephenson.
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