MESON Chess Problem Database
Problem Display
PID: 10164 (4BkN1/P1Pp2NP/1R2p2K/3P3P/4pB2/r7/1r3R2/2q5 w - - 0 1)
Mansfield, Comins
Citation, Probleemblad, 1962
#2
12 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4+
- 2.Rxf4#
- 1...Qa1
- 2.Bd6#
- 1...Qb1
- 2.Bd6#
- 1...Qd1
- 2.Bd6#
- 1...Qe1
- 2.Bd6#
- 1...Qf1
- 2.Bd6#
- 1...Qg1
- 2.Bd6#
- 1...Qh1
- 2.Bd6#
- 1...Qc2
- 2.Bd6#
- 1...Qc3
- 2.Bd6#
- 1...Qc4
- 2.Bd6#
- 1...Qc5
- 2.Bd6#
- 1...Qc6
- 2.Bd6#
- 1...Qxc7
- 2.Bd6#
- 1...Rb1
- 2.Be3#
- 1...Rd2
- 2.Bd6#
- 1...Rbb3
- 2.Be3#
- 1...Rb4
- 2.Be3#
- 1...Rb5
- 2.Be3#
- 1...Rxb6
- 2.Be3#
- 1...Ra1
- 2.Bd2#
- 1...Ra2
- 2.Bd2#
- 1...Re3
- 2.Bd6#
- 1...Ra4
- 2.Bd2#
- 1...Ra5
- 2.Bd2#
- 1...Ra6
- 2.Bd2#
- 1...Rxa7
- 2.Bd2#
- 1...e3
- 2.Bd6#
- 1...exd5
- 2.Rf6#
- 1...e5
- 2.Rf6#
- 1...Qxf4+
- Tries
- 1.Rxe6?
- threat
- 2.Rf6#
- 1...Qxf4+
- 2.Rxf4#
- 1...Qc3
- 2.Bd6#
- 1...Qc6
- 2.Bd6#
- 1...Rb6
- 2.Be3#
- 1...Ra6
- 2.Bd2#
- 1...dxe6!
- threat
- 1.dxe6?
- threat
- 2.e7#
- 1...Qxf4+
- 2.Rxf4#
- 1...Rxb6
- 2.Be3#
- 1...Qc5
- 2.Bd6#
- 1...Qc6
- 2.Bd6#
- 1...dxe6!
- threat
- 1.Rxe6?
- Keys
- 1.Bg6!
- 1...Qxf4+
- 2.Rxf4#
- 1...Qxc7
- 2.Bd6#
- 1...Rxf2
- 2.Rb8#
- 1...Rxb6
- 2.Be3#
- 1...Rxa7
- 2.Bd2#
- 1...exd5
- 2.Rf6#
- 1...Rf3
- 2.a8Q#
- 2.a8R#
- 1...Qd2
- 2.c8Q#
- 2.c8R#
- 1...Qe3
- 2.c8Q#
- 2.c8R#
- 1...Qa1
- 2.Bd6#
- 2.c8Q#
- 2.c8R#
- 1...Qb1
- 2.Bd6#
- 2.c8Q#
- 2.c8R#
- 1...Qd1
- 2.Bd6#
- 2.c8Q#
- 2.c8R#
- 1...Qe1
- 2.Bd6#
- 2.c8Q#
- 2.c8R#
- 1...Qf1
- 2.Bd6#
- 2.c8Q#
- 2.c8R#
- 1...Qg1
- 2.Bd6#
- 2.c8Q#
- 2.c8R#
- 1...Qh1
- 2.Bd6#
- 2.c8Q#
- 2.c8R#
- 1...Qc2
- 2.Bd6#
- 1...Qc3
- 2.Bd6#
- 1...Qc4
- 2.Bd6#
- 1...Qc5
- 2.Bd6#
- 1...Qc6
- 2.Bd6#
- 1...Rb1
- 2.Be3#
- 1...Rba2
- 2.Rb8#
- 1...Rc2
- 2.Rb8#
- 1...Rd2
- 2.Bd6#
- 2.Rb8#
- 1...Re2
- 2.Rb8#
- 1...Rbb3
- 2.Be3#
- 1...Rb4
- 2.Be3#
- 1...Rb5
- 2.Be3#
- 1...Ra1
- 2.Bd2#
- 1...Raa2
- 2.Bd2#
- 1...Rab3
- 2.a8Q#
- 2.a8R#
- 1...Rc3
- 2.a8Q#
- 2.a8R#
- 1...Rd3
- 2.a8Q#
- 2.a8R#
- 1...Re3
- 2.Bd6#
- 2.a8Q#
- 2.a8R#
- 1...Rg3
- 2.a8Q#
- 2.a8R#
- 1...Rh3
- 2.a8Q#
- 2.a8R#
- 1...Ra4
- 2.Bd2#
- 1...Ra5
- 2.Bd2#
- 1...Ra6
- 2.Bd2#
- 1...e3
- 2.Bd6#
- 1...e5
- 2.Rf6#
- 1...d6
- 2.Sxe6#
- 1...Qxf4+
- 1.Bg6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 9
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XB(B)::R(A),XQ(a)
- Q(a);N_PINB(B)::R(A)+B(B),DCHECK
- Q(a);N_PINB(B),P_PINP(D)::R(A)+B(B),DCHECK
- Q(a);N_PINB(B),XP(H)::R(A)+B(B),DCHECK
- R(b);N_GUARD::R(A)+B(B)
- R(b);N_PINB(B)::R(A)+B(B),DCHECK
- R(b);N_GUARD,XR(E)::R(A)+B(B)
- R(c);N_GUARD::R(A)+B(B)
- R(c);N_PINB(B)::R(A)+B(B),DCHECK
- R(c);N_GUARD,XP(G)::R(A)+B(B)
- P(d);N_PINB(B)::R(A)+B(B),DCHECK
- P(e);OGATE,XP(C)::R(E)
- P(e);OGATE::R(E)
- Tries
- Try
- R(E);XP(e)
- Threat
- R(E)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XB(B)::R(A),XQ(a)
- Q(a);N_PINB(B)::R(A)+B(B),DCHECK
- Q(a);N_PINB(B),P_PINR(E)::R(A)+B(B),DCHECK
- R(b);N_GUARD,P_PINR(E)::R(A)+B(B)
- R(c);N_GUARD,P_PINR(E)::R(A)+B(B)
- Refutation
- P(f);XR(E)
- Try
- P(C);XP(e)
- Threat
- P(C)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XB(B)::R(A),XQ(a)
- R(b);N_GUARD,P_PINP(C),XR(E)::R(A)+B(B)
- Q(a);N_PINB(B)::R(A)+B(B),DCHECK
- Q(a);N_PINB(B),P_PINP(C)::R(A)+B(B),DCHECK
- Refutation
- P(f);XP(C)
- Try
- Actual
- B(K);
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XB(B)::R(A),XQ(a)
- Q(a);N_PINB(B),XP(H)::R(A)+B(B),DCHECK
- R(b);N_GUARD,XR(A)::R(E)
- R(b);N_GUARD,XR(E)::R(A)+B(B)
- R(c);N_GUARD,XP(G)::R(A)+B(B)
- P(e);OGATE,XP(C)::R(E)
- R(c);N_GUARD::P=Q
- Q(a);N_GUARD::P=Q
- Q(a);N_PINB(B)::R(A)+B(B),DCHECK
- R(b);N_GUARD::R(A)+B(B)
- R(b);N_GUARD::R(E)
- R(c);N_GUARD::R(A)+B(B)
- R(c);N_GUARD,P_PINP(D)::P=Q
- P(d);N_PINB(B)::R(A)+B(B),DCHECK
- P(e);OGATE::R(E)
- P(f);N_GUARD::S(I),XP(e)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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