MESON Chess Problem Database
Problem Display
PID: 18262 (q2RnQ1b/3B4/1rN3K1/1pNk1P2/2p1R3/BP3P2/8/1b2n3 w - - 0 1)
Mansfield, Comins
4th Prize, The Problemist, 1954
#2
11 + 9
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qxc6+
- 2.Be6#
- 1...Qxa3
- 2.Bxe8#
- 1...Qa4
- 2.Bxe8#
- 1...Qa5
- 2.Bxe8#
- 1...Qa6
- 2.Bxe8#
- 1...Rxc6+
- 2.Be6#
- 1...Rb7
- 2.Sb4#
- 1...Rb8
- 2.Sb4#
- 1...Bxe4
- 2.fxe4#
- 1...Bd4
- 2.Rxd4#
- 1...Be5
- 2.Rxe5#
- 1...Bf6
- 2.Sb4#
- 1...Sd6
- 2.Se7#
- 1...Sf6
- 2.Sb4#
- 2.Rd4#
- 2.Re5#
- 1...Sg7
- 2.Rd4#
- 2.Re5#
- 1...b4
- 2.bxc4#
- 1...Qxc6+
- Tries
- 1.Sd3?
- threat
- 2.Sb4#
- 2.Sf4#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qxc6+
- 2.Be6#
- 1...Rxc6+
- 2.Be6#
- 1...Qxa3
- 2.Sf4#
- 1...Bxd3
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Sxd3
- 2.Qf7#
- 2.Qg8#
- 1...cxd3
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Bc3
- 2.Sf4#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qa4
- 2.Sf4#
- 2.Bxe8#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qa5
- 2.Sf4#
- 2.Bxe8#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qb8
- 2.Sb4#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Bd4
- 2.Sb4#
- 2.Sf4#
- 2.Rxd4#
- 2.Qf7#
- 2.Qg8#
- 1...Be5
- 2.Sb4#
- 2.Rxe5#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Sc2
- 2.Sf4#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Sg2
- 2.Sb4#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Sd6
- 2.Sf4#
- 2.Scb4#
- 2.Se7#
- 2.Qxd6#
- 1...Sf6
- 2.Sdb4#
- 2.Sf4#
- 2.Scb4#
- 2.Se7#
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 2.Qf7#
- 1...Sc7
- 2.Sb4#
- 2.Sf4#
- 2.Qc5#
- 2.Qd6#
- 1...Sg7
- 2.Sb4#
- 2.Sf4#
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 1...b4
- 2.Sf4#
- 2.Qc5#
- 2.bxc4#
- 1...Sxf3!
- threat
- 1.Sa4?
- threat
- 2.Sxb6#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qxc6+
- 2.Be6#
- 1...Rxc6+
- 2.Be6#
- 1...Qxa4
- 2.Bxe8#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qxd8
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...bxa4
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 2.bxc4#
- 1...Qb7
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qa5
- 2.Bxe8#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qa6
- 2.Bxe8#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qa7
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qb8
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Ra6
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Rb7
- 2.Sb4#
- 2.Se7#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Rb8
- 2.Sb4#
- 2.Se7#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Bd4
- 2.Rxd4#
- 2.Qf7#
- 2.Qg8#
- 1...Sd3
- 2.Sxb6#
- 2.Qf7#
- 2.Qg8#
- 1...Sd6
- 2.Sxb6#
- 2.Sb4#
- 2.Se7#
- 2.Qxd6#
- 1...Sf6
- 2.Sc3#
- 2.Sxb6#
- 2.Sb4#
- 2.Se7#
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 2.Qf7#
- 1...Sc7
- 2.Sxb6#
- 2.Qc5#
- 2.Qd6#
- 1...Sg7
- 2.Sc3#
- 2.Sxb6#
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 1...b4
- 2.Sxb6#
- 2.Qc5#
- 2.bxc4#
- 1...Sxf3!
- threat
- 1.Sa6?
- threat
- 2.Sb4#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Qxc6+
- 2.Be6#
- 1...Rxc6+
- 2.Be6#
- 1...Qxa6
- 2.Bxe8#
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Rxa6
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Bc3
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Bd4
- 2.Sb4#
- 2.Rxd4#
- 2.Qf7#
- 2.Qg8#
- 1...Sc2
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Sd3
- 2.Qf7#
- 2.Qg8#
- 1...Sd6
- 2.Sc7#
- 2.Scb4#
- 2.Se7#
- 2.Qxd6#
- 1...Sf6
- 2.Sab4#
- 2.Sc7#
- 2.Scb4#
- 2.Se7#
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 2.Qf7#
- 1...Sc7
- 2.Sb4#
- 2.Sxc7#
- 2.Qc5#
- 2.Qd6#
- 1...Sg7
- 2.Sb4#
- 2.Sc7#
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 1...b4
- 2.Qc5#
- 2.bxc4#
- 1...Sxf3!
- threat
- 1.Sb7?
- threat
- 2.Qc5#
- 2.Qf7#
- 2.Qg8#
- 1...Rxc6+
- 2.Be6#
- 1...Qxa3
- 2.Qf7#
- 2.Qg8#
- 1...Bd4
- 2.Rxd4#
- 2.Qf7#
- 2.Qg8#
- 1...Sd3
- 2.Qf7#
- 2.Qg8#
- 1...Sd6
- 2.Sb4#
- 2.Se7#
- 2.Qxd6#
- 1...Sf6
- 2.Sb4#
- 2.Se7#
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 2.Qf7#
- 1...Sc7
- 2.Qc5#
- 2.Qd6#
- 1...Sg7
- 2.Rd4#
- 2.Re5#
- 2.Qc5#
- 2.Qd6#
- 1...Sxf3!
- threat
- 1.Bc8+?
- 1...Sd6
- 2.Se7#
- 2.Rxd6#
- 2.Qxd6#
- 1...Kxc6!
- 1...Sd6
- 1.Qd6+?
- 1...Sxd6
- 2.Se7#
- 1...Kxd6!
- 1...Sxd6
- 1.Qe7?
- threat
- 2.Qe6#
- 1...Qxc6+
- 2.Be6#
- 1...Rxc6+
- 2.Be6#
- 1...Qxa3
- 2.Bxe8#
- 1...Sg7
- 2.Rd4#
- 2.Re5#
- 2.Qe5#
- 1...b4
- 2.bxc4#
- 1...Sc7!
- threat
- 1.Qf6?
- threat
- 2.Se7#
- 2.Rd4#
- 2.Re5#
- 2.Qe6#
- 1...Qxc6
- 2.Bxc6#
- 2.Be6#
- 2.Rd4#
- 1...Qxa3
- 2.Re5#
- 1...Qxd8
- 2.Rd4#
- 2.Re5#
- 2.Qe6#
- 1...Rxc6
- 2.Bxc6#
- 2.Be6#
- 2.Rd4#
- 1...Bxe4
- 2.Se7#
- 2.Qe6#
- 2.fxe4#
- 1...Sxf3
- 2.Se7#
- 2.Qe6#
- 1...Sxf6
- 2.Rd4#
- 1...cxb3
- 2.Se7#
- 2.Rd4#
- 2.Qe6#
- 1...b4
- 2.Re5#
- 1...Qb8
- 2.Se7#
- 2.Rd4#
- 2.Qe6#
- 1...Sc2
- 2.Se7#
- 2.Re5#
- 2.Qe6#
- 1...Sd3
- 2.Se7#
- 2.Rd4#
- 2.Qe6#
- 1...Sc7
- 2.Se7#
- 2.Bc8#
- 2.Rd4#
- 2.Re5#
- 1...Sg7
- 2.Se7#
- 2.Bc8#
- 2.Rd4#
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 1...Bxf6!
- threat
- 1.Qxh8?
- threat
- 2.Rd4#
- 2.Qd4#
- 2.Qe5#
- 1...Qxc6+
- 2.Be6#
- 1...Rxc6+
- 2.Be6#
- 1...Kd6
- 2.Qe5#
- 1...Qxa3
- 2.Qd4#
- 2.Qe5#
- 1...Bxe4
- 2.Qd4#
- 2.Qe5#
- 1...b4
- 2.Qd4#
- 2.Qe5#
- 1...Qb8
- 2.Rd4#
- 2.Qd4#
- 1...Sc2
- 2.Qe5#
- 1...Sd3
- 2.Rd4#
- 2.Qd4#
- 1...Sf6
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...Sxf3!
- threat
- 1.Sd3?
- Keys
- 1.f6!
- threat
- 2.Sb4#
- 1...Bxe4+
- 2.fxe4#
- 1...Qxc6
- 2.Be6#
- 1...Qxa3
- 2.Bxe8#
- 1...Rxc6
- 2.Be6#
- 1...Qa4
- 2.Bxe8#
- 1...Qa5
- 2.Bxe8#
- 1...Sc2
- 2.Re5#
- 1...Sd3
- 2.Rd4#
- 1...Sd6
- 2.Se7#
- 1...b4
- 2.bxc4#
- threat
- 1.f6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(g);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Q(g);N_GUARD,XB(A)::R(J)+B(I),XS(h)
- Q(g);N_GUARD::R(J)+B(I),XS(h)
- R(f);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- R(f);N_PINS(G)::S(G)
- B(a);OGATE,P_PINP(F),XR(D)::P(C),XB(a)
- B(i);N_GUARD::R1(D),XB(i)
- B(i);N_PINS(G)::S(G)
- S(h);N_PINS(G),SBLOCK::S(G)
- P(d);N_GUARD::P(B),XP(c)
- Tries
- Try
- S(E);
- Threat
- DUALS(5)
- Vars
- Q(g);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- R(f);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Q(g);XB(A)::S(E)
- Refutation
- S(b);XP(C)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(g);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- R(f);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Refutation
- S(b);XP(C)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(g);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- R(f);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Refutation
- S(b);XP(C)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(f);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Refutation
- S(b);XP(C)
- Try
- B(I);CHECK
- Refutation
- K(e);S_FLIGHT,XS(G)
- Try
- Q(K);CHECK,N_SPINS(G)
- Vars
- S(h);SBLOCK,XQ(K)::S(G)
- Refutation
- K(e);P-FLIGHT,XQ(K)
- Try
- Q(K);
- Threat
- QAB1(K)
- Vars
- Q(g);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- R(f);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Q(g);N_GUARD,XB(A)::R(J)+B(I),XS(h)
- P(d);N_GUARD::P(B),XP(c)
- Refutation
- S(h);
- Try
- Q(K);N_SPINS(G)
- Threat
- DUALS(4)
- Vars
- Q(g);XB(A)::R1(D)
- S(h);XQ(K)::R1(D)
- P(d);::R1(D)
- Refutation
- B(i);XQ(K)
- Try
- Q(K);XB(i)
- Threat
- DUALS(3)
- Vars
- Q(g);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- R(f);CHECK,SBLOCK,XS(G)::R(J)+B(I),DCHECK
- K(e);N_PINS(G),P-FLIGHT::QAB1(K)
- S(b);::QAR1(K)
- S(h);N_PINS(G)::R1(D)
- S(h);::R1(D)
- Refutation
- S(b);XP(C)
- Try
- Actual
- P(F);N_SPINS(G),P_SPINR(D)
- Threat
- S(G)
- Vars
- B(a);CHECK,OGATE,XR(D)::P(C),XB(a)
- Q(g);P_PINP(F),SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Q(g);N_GUARD,XB(A)::R(J)+B(I),XS(h)
- R(f);P_PINP(F),SBLOCK,XS(G)::R(J)+B(I),DCHECK
- Q(g);N_GUARD::R(J)+B(I),XS(h)
- S(b);N_PINR(D)::R1(D)
- S(h);SBLOCK::S(G)
- P(d);N_GUARD::P(B),XP(c)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).