MESON Chess Problem Database
Problem Display
PID: 55329 (8/B3p2K/6N1/4p3/4k2P/4N1r1/2P1R1P1/7Q w - - 0 1)
Mansfield, Comins
Suomen Shakki Try Ty., 1973
#2
9 + 4
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Qxg2#
- 1...Rxe3
- 2.g4#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Rg5
- 2.g3#
- 2.g4#
- 1...Rxg6
- 2.g3#
- 1...Rxg2
- Tries
- 1.Kh8?
- 1...Rxg2
- 2.Qxg2#
- 1...Rxe3
- 2.g4#
- 1...Rxg6
- 2.g3#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Rg5
- 2.g3#
- 2.g4#
- 1...e6!
- 1...Rxg2
- 1.Bc5?
- 1...Rxg2
- 2.Qxg2#
- 1...Rxe3
- 2.g4#
- 1...Rxg6
- 2.g3#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Rg5
- 2.g3#
- 2.g4#
- 1...e6!
- 1...Rxg2
- 1.Bb6?
- 1...Rxg2
- 2.Qxg2#
- 1...Rxe3
- 2.g4#
- 1...Rxg6
- 2.g3#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Rg5
- 2.g3#
- 2.g4#
- 1...e6!
- 1...Rxg2
- 1.Re1?
- 1...Rxg2
- 2.Qxg2#
- 1...Rxe3
- 2.g4#
- 1...Rxg6
- 2.g3#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Rg5
- 2.g3#
- 2.g4#
- 1...e6!
- 1...Rxg2
- 1.Qa1?
- threat
- 2.Qxe5#
- 2.Qa4#
- 1...Rxe3
- 2.Qxe5#
- 1...Rxg6
- 2.Qa4#
- 1...Rg5
- 2.Qa4#
- 1...Rxg2!
- threat
- 1.Qd1?
- threat
- 2.Qd3#
- 2.Qd5#
- 1...Rxg2
- 2.Qd5#
- 1...Rxe3
- 2.Qd3#
- 1...e6
- 2.Qd3#
- 1...Rxg6!
- threat
- 1.Qf1?
- threat
- 2.Qf5#
- 1...Rxe3
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.gxf3#
- 1...Rg5
- 2.Qf3#
- 1...e6!
- threat
- 1.h5?
- 1...Rxg2
- 2.Qxg2#
- 1...Rxe3
- 2.g4#
- 1...Rxg6
- 2.g3#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Rg5
- 2.g3#
- 2.g4#
- 1...e6!
- 1...Rxg2
- 1.Kh8?
- Keys
- 1.Qb1!
- threat
- 2.Qb4#
- 2.Qb7#
- 2.c3#
- 2.c4#
- 1...Rxg2
- 2.Qb7#
- 1...Rxe3
- 2.c4#
- 1...Rxg6
- 2.Qb4#
- threat
- 1.Qb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB(A)+P(D)
- R(a);OGATE::P(D),XR(a)
- R(a);OGATE,P_PINP(F)::QAB(A)+P(D),XR(a)
- R(a);OGATE::QAB(A)+P(D)
- R(a);OGATE,XS(G)::QAB(A)+P(D)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB(A)+P(D)
- R(a);OGATE,XS(G)::QAB(A)+P(D)
- R(a);OGATE::P(D),XR(a)
- R(a);OGATE,P_PINP(F)::QAB(A)+P(D),XR(a)
- R(a);OGATE::QAB(A)+P(D)
- Refutation
- P(d);
- Try
- B(H);
- Vars
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB(A)+P(D)
- R(a);OGATE,XS(G)::QAB(A)+P(D)
- R(a);OGATE::P(D),XR(a)
- R(a);OGATE,P_PINP(F)::QAB(A)+P(D),XR(a)
- R(a);OGATE::QAB(A)+P(D)
- Refutation
- P(d);
- Try
- B(H);
- Vars
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB(A)+P(D)
- R(a);OGATE,XS(G)::QAB(A)+P(D)
- R(a);OGATE::P(D),XR(a)
- R(a);OGATE,P_PINP(F)::QAB(A)+P(D),XR(a)
- R(a);OGATE::QAB(A)+P(D)
- Refutation
- P(d);
- Try
- R(C);
- Vars
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB(A)+P(D)
- R(a);OGATE,XS(G)::QAB(A)+P(D)
- R(a);OGATE::P(D),XR(a)
- R(a);OGATE,P_PINP(F)::QAB(A)+P(D),XR(a)
- R(a);OGATE::QAB(A)+P(D)
- Refutation
- P(d);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);P_SPINR(a),XS(E)::QAR1(A),XP(c)
- R(a);XS(G)::QAR(A)
- R(a);::QAR(A)
- Refutation
- R(a);XP(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);XP(D)::QAB1(A)
- R(a);P_SPINR(a),XS(E)::QAB1(A)
- P(d);::QAB1(A)
- Refutation
- R(a);XS(G)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- R(a);N_GUARD,P_SPINR(a),XS(E)::QAB1(A)
- R(a);N_GUARD::QAB1(A)
- Refutation
- P(d);
- Try
- P(F);
- Vars
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB(A)+P(D)
- R(a);OGATE,XS(G)::QAB(A)+P(D)
- R(a);OGATE::P(D),XR(a)
- R(a);OGATE,P_PINP(F)::QAB(A)+P(D),XR(a)
- R(a);OGATE::QAB(A)+P(D)
- Refutation
- P(d);
- Try
- Actual
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(a);XP(D)::QAB(A)
- R(a);P_SPINR(a),XS(E)::QAB(A)+P(B)
- R(a);XS(G)::QAR(A)
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).