MESON Chess Problem Database
Problem Display
PID: 10180 (2b2K2/7p/2PQ2pB/4NkP1/2pP2n1/3nP3/B4NP1/5R2 w - - 0 1)
Mansfield, Comins
3rd HM., Shakhmaty, 1962
#2
12 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sdxf2
- 2.Bb1#
- 1...Sf4
- 2.e4#
- 1...Sh2
- 2.Qf6#
- 1...Sxe3
- 2.Qf6#
- 1...Sxe5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sxh6
- 2.Qf6#
- 1...Ba6
- Tries
- 1.Sh1+?
- 1...Sdf2
- 2.Sg3#
- 2.Bb1#
- 1...Sf4
- 2.Sg3#
- 2.Bb1#
- 2.Rxf4#
- 1...Sgf2
- 2.Sg3#
- 1...Ke4!
- 1...Sdf2
- 1.Se4+?
- 1...Sdf2
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 2.Rxf4#
- 1...Sgf2
- 2.Sg3#
- 1...Kxe4!
- 1...Sdf2
- 1.Sfxg4+?
- 1...Sf2
- 2.Bb1#
- 1...Sf4
- 2.Bb1#
- 2.Rxf4#
- 1...Ke4!
- 1...Sf2
- 1.Sexd3?
- threat
- 2.e4#
- 1...Sxe3
- 2.Qe5#
- 2.Qf6#
- 1...Sxh6
- 2.Qe5#
- 2.Qd5#
- 2.Qf6#
- 1...Sf6
- 2.Qe5#
- 2.Qxf6#
- 1...Sxf2!
- threat
- 1.Sexg4?
- threat
- 2.Qf6#
- 2.e4#
- 1...Be6
- 2.e4#
- 1...Sc5
- 2.Qe5#
- 2.Qd5#
- 2.Qf6#
- 1...Se5
- 2.Qxe5#
- 2.Qf6#
- 1...Sxf2!
- threat
- 1.Sxg6?
- threat
- 2.Sh4#
- 2.Se7#
- 2.e4#
- 1...Sdxf2
- 2.Bb1#
- 1...Sxe3
- 2.Sh4#
- 2.Se7#
- 2.Qf6#
- 1...Sxh6
- 2.Qf6#
- 1...hxg6
- 2.e4#
- 1...Be6
- 2.Sh4#
- 2.Se7#
- 1...Sf6
- 2.Sh4#
- 2.Se7#
- 2.Qxf6#
- 1...Sc5
- 2.Sh4#
- 2.Se7#
- 1...Sgxf2!
- threat
- 1.Sh1+?
- Keys
- 1.Qd5!
- 1...Sdxf2
- 2.Bb1#
- 1...Sdxe5
- 2.Bb1#
- 1...Sgxf2
- 2.g4#
- 1...Sxe3
- 2.Qf7#
- 1...Sgxe5
- 2.g4#
- 1...Sxh6
- 2.Sexd3#
- 1...Ba6
- 2.Qd7#
- 1...Be6
- 2.Qe4#
- 1...Bb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sc1
- 2.Sfxg4#
- 2.Sexg4#
- 1...Se1
- 2.Sexg4#
- 1...Sb2
- 2.Sfxg4#
- 2.Sexg4#
- 1...Sb4
- 2.Sfxg4#
- 1...Sf4
- 2.e4#
- 1...Sc5
- 2.Sfxg4#
- 2.Sexg4#
- 1...Sh2
- 2.Sexd3#
- 2.Qf7#
- 1...Sf6
- 2.Sfxd3#
- 1...c3
- 2.Qe4#
- 1...Sdxf2
- 1.Qd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- B(g);N_GUARD::QAB(J)
- B(g);N_GUARD::QAB(J),XB(g)
- S(a);OGATEB,P_SPINS(a),XS(C)::B(B)
- S(a);SBLOCK::P(E)
- S(c);N_GUARD::QAR1(J)
- S(c);N_GUARD,XP(E)::QAR1(J)
- S(c);N_GUARD,XS(G)::QAR1(J)
- S(c);N_GUARD::QAR1(J),XS(c)
- S(c);N_GUARD,XB(K)::QAR1(J)
- Tries
- Try
- S(C);CHECK
- Vars
- S(c);P_SPINS(c)::S(C)
- Refutation
- K(d);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- S(a);P_SPINS(a)::S(C)
- S(c);P_SPINS(c)::S(C)
- Refutation
- K(d);S_FLIGHT,XS(C)
- Try
- S(C);CHECK,XS(c)
- Vars
- S(a);P_SPINS(a)::B(B)
- Refutation
- K(d);S_FLIGHT
- Try
- S(G);XS(a)
- Threat
- P(E)
- Refutation
- S(c);P_SPINS(c),XS(C)
- Try
- S(G);XS(c)
- Threat
- DUALS(2)
- Vars
- B(g);::P(E)
- Refutation
- S(a);P_SPINS(a),XS(C)
- Try
- S(G);XP(e)
- Threat
- DUALS(3)
- Vars
- S(a);OGATEB,P_SPINS(a),XS(C)::B(B)
- S(c);N_GUARD,XB(K)::QAR1(J)
- P(f);XS(G)::P(E)
- Refutation
- S(c);P_SPINS(c),XS(C)
- Try
- Actual
- Q(J);
- Vars
- S(a);OGATEB,P_SPINS(a),XS(C)::B(B)
- S(a);OGATEB,P_SPINS(a),XS(G)::B(B)
- S(c);OGATE,P_SPINS(c),XS(C)::P(D)
- S(c);N_GUARD,XP(E)::QAR2(J)
- S(c);OGATE,P_SPINS(c),XS(G)::P(D)
- S(c);N_GUARD,XB(K)::QAR(J)+S(G),XS(a)
- B(g);N_GUARD::QAB(J)
- B(g);SBLOCK::QAB1(J)
- B(g);N_GUARD::QAB(J),XB(g)
- S(a);N_GUARD::QAR(J)+S(G),XS(c)
- S(a);N_GUARD::R(A)+S(C),XS(c)
- S(a);SBLOCK::P(E)
- S(c);N_GUARD::R(A)+S(C),XS(a)
- P(b);::QAB1(J)
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).