MESON Chess Problem Database
Problem Display
PID: 691 (3b4/qP1k1pN1/2R1R1p1/2P3p1/B4pQ1/5K2/8/8 w - - 0 1)
Mansfield, Comins
British Chess Magazine, 1934
#2
8 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qxc5
- 2.Rxc5#
- 2.b8S#
- 1...Qb8
- 2.Rc8#
- 1...Qxa4
- 2.b8S#
- 1...Qa5
- 2.b8S#
- 1...Qa6
- 2.b8S#
- 1...Ba5
- 2.Rc8#
- 1...Bf6
- 2.Re8#
- 1...Bc7
- 2.Rcd6#
- 1...Be7
- 2.Red6#
- 1...fxe6
- 2.Qxe6#
- 1...Qxc5
- Tries
- 1.Kg2?
- threat
- 2.Qd1#
- 1...Qxc5
- 2.Rxc5#
- 2.b8S#
- 1...Qxa4
- 2.b8S#
- 1...fxe6
- 2.Qxe6#
- 1...Ba5
- 2.Rc8#
- 1...Bf6
- 2.Re8#
- 1...Bc7
- 2.Rcd6#
- 1...Be7
- 2.Red6#
- 1...Qb8
- 2.Rc8#
- 1...Qa5
- 2.b8S#
- 1...Qa6
- 2.b8S#
- 1...f3+!
- threat
- 1.Se8?
- threat
- 2.Ra6#
- 2.Rcd6#
- 2.Rc7#
- 1...Qxc5
- 2.Rxc5#
- 2.Rcd6#
- 2.Rc7#
- 2.b8S#
- 1...Qxa4
- 2.Rcd6#
- 2.b8S#
- 1...fxe6
- 2.Rc7#
- 2.Qxe6#
- 1...Ba5
- 2.Rcd6#
- 2.Rc8#
- 1...Bb6
- 2.Rcd6#
- 1...Bf6
- 2.Rcd6#
- 1...Bc7
- 2.Rcd6#
- 1...Be7
- 2.Rcd6#
- 1...Qb6
- 2.Rxb6#
- 2.Rcd6#
- 2.Rc7#
- 1...Qa5
- 2.Rcd6#
- 2.Rc7#
- 2.b8S#
- 1...Qa6
- 2.Rxa6#
- 2.Rcd6#
- 2.Rc7#
- 2.b8S#
- 1...f5
- 2.Ra6#
- 2.Rcd6#
- 1...Qxb7!
- threat
- 1.b8Q?
- threat
- 2.Ra6#
- 2.Rcd6#
- 2.Rc7#
- 2.Qd6#
- 2.Qc8#
- 1...Qxc5
- 2.Rxc5#
- 2.Rcd6#
- 2.Rc7#
- 2.Qc8#
- 1...Qxa4
- 2.Rcd6#
- 2.Qd6#
- 2.Qc8#
- 1...fxe6
- 2.Rc7#
- 2.Qxe6#
- 2.Qd6#
- 1...Qb6
- 2.Rxb6#
- 2.Rcd6#
- 2.Rc7#
- 2.Qd6#
- 2.Qc8#
- 1...Qa5
- 2.Rcd6#
- 2.Rc7#
- 2.Qd6#
- 2.Qc8#
- 1...Qa6
- 2.Rxa6#
- 2.Rcd6#
- 2.Rc7#
- 2.Qd6#
- 1...Qb7
- 2.Qd6#
- 1...Qc7
- 2.Rcd6#
- 2.Rxc7#
- 1...Qa8
- 2.Qd6#
- 1...Bb6
- 2.Rcd6#
- 2.Rc7#
- 2.Qd6#
- 2.Qc8#
- 2.Qe8#
- 1...Bc7
- 2.Ra6#
- 2.Rcd6#
- 2.Rxc7#
- 2.Qe8#
- 1...Be7
- 2.Ra6#
- 2.Rcd6#
- 2.Rc7#
- 2.Red6#
- 2.Rf6#
- 2.Qc8#
- 2.Qe8#
- 1...Qxb8!
- threat
- 1.Kg2?
- Keys
- 1.Kf2!
- threat
- 2.Qd1#
- 1...Qxc5+
- 2.Rxc5#
- 1...Qxa4
- 2.b8S#
- 1...fxe6
- 2.Qxe6#
- 1...Ba5
- 2.Rc8#
- 1...Bf6
- 2.Re8#
- 1...Bc7
- 2.Rcd6#
- 1...Be7
- 2.Red6#
- 1...Qb8
- 2.Rc8#
- 1...Qa5
- 2.b8S#
- 1...Qa6
- 2.b8S#
- 1...f3
- 2.Qd4#
- threat
- 1.Kf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(d);N_GUARD::B(B)+R(E)
- Q(d);N_GUARD,XB(B)::P=S
- Q(d);N_GUARD::P=S
- B(g);S_CUTQ(d)::B(B)+R(E)
- B(g);S_CUTP(f)::QAB(C)+R(F)
- B(g);SBLOCK::B(B)+R(E),DCHECK
- B(g);SBLOCK::QAB(C)+R(F),DCHECK
- P(f);OGATE,P_SPINP(f),XR(F)::QAB1(C),XP(f)
- Tries
- Try
- K(A);S_FLIGHT
- Threat
- QAR(C)
- Vars
- Q(d);N_GUARD,XB(B)::P=S
- P(f);OGATE,P_SPINP(f),XR(F)::QAB1(C),XP(f)
- B(g);S_CUTQ(d)::B(B)+R(E)
- B(g);S_CUTP(f)::QAB(C)+R(F)
- B(g);SBLOCK::B(B)+R(E),DCHECK
- B(g);SBLOCK::QAB(C)+R(F),DCHECK
- Q(d);N_GUARD::B(B)+R(E)
- Q(d);N_GUARD::P=S
- Refutation
- P(a);CHECK
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- B(g);::B(B)+R(E),DCHECK
- Refutation
- Q(d);P_PINR(E),XP(G)
- Try
- P(G);
- Threat
- DUALS(5)
- Vars
- Q(d);P_PINR(E)::QAR1(G)
- Refutation
- Q(d);XQ(G)
- Try
- Actual
- K(A);P-FLIGHT,P_SPINP(D)
- Threat
- QAR(C)
- Vars
- Q(d);CHECK,OGATE,XP(D)::B(B)+R(E),XQ(d)
- Q(d);N_GUARD,N_PINP(D),XB(B)::P=S
- P(f);OGATE,P_SPINP(f),XR(F)::QAB1(C),XP(f)
- B(g);S_CUTQ(d)::B(B)+R(E)
- B(g);S_CUTP(f)::QAB(C)+R(F)
- B(g);SBLOCK::B(B)+R(E),DCHECK
- B(g);SBLOCK::QAB(C)+R(F),DCHECK
- Q(d);N_GUARD,N_PINP(D)::B(B)+R(E)
- Q(d);N_GUARD,N_PINP(D)::P=S
- P(a);OGATE::QAR(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).