MESON Chess Problem Database
Problem Display
PID: 6760 (Q7/8/1p1Pp3/1p1q2p1/4k3/2RN4/2B4K/5RB1 w - - 0 1)
Mansfield, Comins
3rd Prize, Karlovac Chess Club, 1933-1934
#2
8 + 6
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qc6
- Tries
- 1.Kh1?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Kg2?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Kg3?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Bxb6?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 1...Qxa8!
- 1...Qc6
- 1.Bb1?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Re1+?
- 1...Kf3
- 2.Bd1#
- 1...Kf5!
- 1...Kf3
- 1.Rf6?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Rf7?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Rf8?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Rb3?
- threat
- 2.Rb4#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rxb4#
- 1...Qxa8!
- threat
- 1.Rc5?
- 1...Qxa8
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Se5#
- 2.Re5#
- 1...b4
- 2.Rc4#
- 1...Qc6
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Se5#
- 2.Re5#
- 2.Qxc6#
- 1...Qb7
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Se5#
- 2.Re5#
- 2.Qxb7#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Qxd5#
- 1...bxc5!
- 1...Qxa8
- 1.Rc7?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Rc8?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Qc6?
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxc6!
- 1...b4
- 1.Qb7?
- 1...Qc6
- 2.Qxc6#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Qh7#
- 1...Qxb7!
- 1...Qc6
- 1.Qh8?
- threat
- 2.Sc5#
- 1...Qe5+
- 2.Sf4#
- 2.Qxe5#
- 1...Qxd3
- 2.Qd4#
- 1...Qa2
- 2.Qd4#
- 2.Qe5#
- 1...Qb3
- 2.Qd4#
- 2.Qe5#
- 1...Qc4
- 2.Qe5#
- 1...Qc6
- 2.Sb4#
- 2.Sf4#
- 2.Qd4#
- 2.Qe5#
- 1...Qb7
- 2.Sb4#
- 2.Sf4#
- 2.Qd4#
- 2.Qe5#
- 1...Qa8
- 2.Sb4#
- 2.Sf4#
- 2.Qd4#
- 2.Qe5#
- 2.Qxa8#
- 1...Qd4
- 2.Qxd4#
- 1...Qc5
- 2.Sb4#
- 2.Sf4#
- 1...Qf5
- 2.Sb4#
- 2.Sf4#
- 2.Qd4#
- 1...Qxd6+!
- threat
- 1.d7?
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 1...Qxa8!
- 1...Qc6
- 1.Kh1?
- Keys
- 1.Rc6!
- 1...Qe5+
- 2.Sf4#
- 1...Qxd6+
- 2.Rxd6#
- 1...Qxc6
- 2.Qxc6#
- 1...Qxd3
- 2.Rc5#
- 1...Qa2
- 2.Rc4#
- 1...Qb3
- 2.Rc4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Rc4#
- 1...Qc5
- 2.Rxc5#
- 1...Qf5
- 2.Rc4#
- 1...b4
- 2.Rc4#
- 1...g4
- 2.Rf4#
- 1...e5
- 2.Sc5#
- 1...Qe5+
- 1.Rc6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 1
- Sets
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- K(D);P-FLIGHT
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- K(D);S_FLIGHT
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- B(B);XP(e)
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- B(C);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- R(A);CHECK
- Vars
- K(a);S_FLIGHT::B(C)
- Refutation
- K(a);N_SPINQ(c),S_FLIGHT
- Try
- R(A);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- R(A);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- R(A);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- R(E);
- Threat
- R(E)
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);::R(E),XP(b)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- R(E);
- Vars
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- P(e);XR(E)
- Try
- R(E);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- R(E);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- Q(H);
- Vars
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- Q(H);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- Q(H);N_PINQ(c)
- Threat
- B(C)+S(F),DCHECK
- Vars
- Q(c);N_GUARD,P_SPINQ(c),XS(F)::QAR1(H)
- Q(c);N_GUARD::QAR1(H)
- Q(c);N_GUARD::QAR1(H),XQ(c)
- Refutation
- Q(c);CHECK,XP(G)
- Try
- P(G);
- Vars
- Q(c);OGATEB::QAB(H),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- Refutation
- Q(c);N_SPINQ(c),XQ(H)
- Try
- Actual
- R(E);N_PINQ(c)
- Vars
- Q(c);CHECK,N_GUARD,SBLOCK::B(C)+S(F)
- Q(c);CHECK,OGATE,XP(G)::QAB(H)+R(E),XQ(c)
- Q(c);OGATE,P_SPINQ(c),XR(E)::QAB(H),XQ(c)
- Q(c);OGATEB,P_SPINQ(c),XS(F)::QAB(H)+R(E)
- Q(c);P_PINB(C)::QAB(H)+R(E),DCHECK
- Q(c);::QAB(H)+R(E),DCHECK
- Q(c);::QAB(H)+R(E),DCHECK,XQ(c)
- Q(c);S_CUTP(b)::QAB(H)+R(E)
- Q(c);OGATEB::QAB(H)+R(E),XQ(c)
- P(b);N_GUARD::R(E)
- P(d);N_GUARD::R1(A)
- P(f);SBLOCK::B(C)+S(F),DCHECK
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).