MESON Chess Problem Database
Problem Display
PID: 11201 (K2nrB2/1p1P1PN1/3N1kb1/p3p1pP/q4P2/5Q2/8/8 w - - 0 1)
Mansfield, Comins
Chess, 1937
#2
9 + 9
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.dxe8S#
- 1...Qc2
- 2.dxe8S#
- 1...Qb3
- 2.dxe8S#
- 1...Qa1
- 2.dxe8S#
- 1...Qa2
- 2.dxe8S#
- 1...Qa3
- 2.dxe8S#
- 1...Qb4
- 2.dxe8S#
- 1...Qc4
- 2.dxe8S#
- 1...Qd4
- 2.dxe8S#
- 1...Qe4
- 2.dxe8S#
- 1...Qxf4
- 2.dxe8S#
- 1...Bb1
- 2.fxe8S#
- 1...Bc2
- 2.fxe8S#
- 1...Bd3
- 2.fxe8S#
- 1...Be4
- 2.fxe8S#
- 1...Bf5
- 2.fxe8S#
- 1...Bh7
- 2.fxe8S#
- 1...Sc6+
- 2.dxe8S#
- 1...Se6+
- 2.Sgxe8#
- 1...Sxf7+
- 2.Sdxe8#
- 1...b5
- 2.dxe8S#
- 1...Qd1
- Tries
- 1.fxe8Q?
- threat
- 2.Qxg6#
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Qxd7
- 2.Qxg6#
- 2.Qxe5#
- 2.fxe5#
- 1...Qxf4
- 2.Qxg6#
- 2.Qe7#
- 2.Qxd8#
- 1...Bxh5
- 2.Sxh5#
- 2.fxe5#
- 1...exf4
- 2.Qe7#
- 1...gxf4
- 2.Qxg6#
- 2.Qe7#
- 2.Qxd8#
- 1...Qc2
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Qb5
- 2.Qxg6#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Qa1
- 2.Qxg6#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Qd4
- 2.Qxg6#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Qe4
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Bb1
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Bc2
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Bd3
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Be4
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Bf5
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Bf7
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Bh7
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 2.fxe5#
- 1...Sc6
- 2.Qxg6#
- 2.Qe6#
- 2.fxe5#
- 1...Se6
- 2.Qxg6#
- 2.Qxe6#
- 2.Qe7#
- 1...Sf7
- 2.Qe6#
- 2.Qe7#
- 2.fxe5#
- 1...e4
- 2.Qxg6#
- 2.Qe5#
- 2.Qe7#
- 2.Qxd8#
- 1...g4
- 2.Qxg6#
- 2.Qxe5#
- 2.Qe7#
- 2.Qxd8#
- 1...Bxe8!
- threat
- 1.fxe8Q?
- Keys
- 1.Qe4!
- threat
- 2.Qxg6#
- 1...Sc6+
- 2.dxe8S#
- 1...Se6+
- 2.Sgxe8#
- 1...Sxf7+
- 2.Sdxe8#
- 1...Qxe4
- 2.dxe8S#
- 1...Rxf8
- 2.Qxe5#
- 1...Bxe4
- 2.fxe8S#
- 1...Bxh5
- 2.Qf5#
- 1...Bxf7
- 2.Qf5#
- 1...exf4
- 2.Sgxe8#
- 1...Qc2
- 2.dxe8S#
- 1...Bf5
- 2.Qxf5#
- 2.fxe8S#
- 1...Bh7
- 2.fxe8S#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::PXR(i)=S
- Q(a);N_GUARD,P_SPINQ(a),XP(B)::PXR(i)=S
- B(f);N_GUARD::PXR(i)=S
- S(h);CHECK,S_CUTQ(a)::PXR(i)=S
- S(h);CHECK,SBLOCK::S(G),XR(i)
- S(h);CHECK,SBLOCK,XP(F)::S(D),XR(i)
- P(g);S_CUTQ(a)::PXR(i)=S
- Tries
- Try
- P(F);XR(i)
- Threat
- DUALS(5)
- Vars
- P(c);P_SPINP(c),XP(B)::QAB1(F)
- Refutation
- B(f);XQ(F)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A),XB(f)
- Vars
- S(h);CHECK,S_CUTQ(a)::PXR(i)=S
- S(h);CHECK,SBLOCK::S(G),XR(i)
- S(h);CHECK,SBLOCK,XP(F)::S(D),XR(i)
- Q(a);N_GUARD,XQ(A)::PXR(i)=S
- R(i);N_GUARD,XB(I)::QAB1(A),XP(c)
- B(f);N_GUARD,XQ(A)::PXR(i)=S
- B(f);N_GUARD,XP(C)::QAR1(A)
- B(f);N_GUARD,XP(F)::QAR1(A)
- P(c);XP(B)::S(G),XR(i)
- Q(a);N_GUARD::PXR(i)=S
- B(f);N_GUARD::PXR(i)=S
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).