MESON Chess Problem Database
Problem Display
PID: 18261 (q7/5p2/5P2/p1N1r2p/5kBP/4Nn2/6K1/1QB2R2 w - - 0 1)
Mansfield, Comins
1st HM., The Problemist, 1954
#2
9 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Rxf3#
- 1...Qa7
- 2.Rxf3#
- 1...Qb8
- 2.Rxf3#
- 1...Qc8
- 2.Rxf3#
- 1...Qd8
- 2.Rxf3#
- 1...Qe8
- 2.Rxf3#
- 1...Qf8
- 2.Rxf3#
- 1...Qg8
- 2.Rxf3#
- 1...Qh8
- 2.Rxf3#
- 1...Rxe3
- 2.Qf5#
- 1...Re4
- 2.Sd3#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Qxf5#
- 1...Re6
- 2.Qf5#
- 1...Re7
- 2.Qf5#
- 1...Re8
- 2.Qf5#
- 1...hxg4
- 2.Sd5#
- 1...Qa6
- Tries
- 1.Kh3?
- threat
- 2.Sg2#
- 2.Sd5#
- 1...Rxe3
- 2.Qf5#
- 1...Rxc5
- 2.Sc4#
- 1...Re4
- 2.Sd3#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Sc4#
- 2.Qxf5#
- 1...Rg5
- 2.Sc4#
- 1...Re6
- 2.Qf5#
- 1...Re7
- 2.Qf5#
- 1...Re8
- 2.Qf5#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...hxg4+!
- threat
- 1.Sd1+?
- 1...Re3
- 2.Qf5#
- 1...Kxg4!
- 1...Re3
- 1.Sc4+?
- 1...Re3
- 2.Qf5#
- 1...Kxg4!
- 1...Re3
- 1.Se6+?
- 1...Rxe6
- 2.Qf5#
- 1...fxe6!
- 1...Rxe6
- 1.Bxf3?
- threat
- 2.Sd5#
- 2.Sd3#
- 2.Be4#
- 2.Bd5#
- 2.Bc6#
- 2.Bb7#
- 2.Bxa8#
- 1...Qxf3+
- 2.Rxf3#
- 1...Qg8+
- 2.Bg4#
- 1...Rg5+
- 2.Sg4#
- 1...Rxc5
- 2.Sc4#
- 1...Re4
- 2.Sd3#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Sc4#
- 2.Sg4#
- 2.Sd3#
- 2.Qxf5#
- 1...Re6
- 2.Sd3#
- 2.Qf5#
- 1...Re7
- 2.Sd3#
- 2.Qf5#
- 1...Re8
- 2.Sd3#
- 2.Qf5#
- 1...Qe4
- 2.Bxe4#
- 1...Qd5
- 2.Sxd5#
- 2.Be4#
- 2.Bxd5#
- 1...Qc6
- 2.Sd5#
- 2.Sd3#
- 2.Be4#
- 2.Bd5#
- 2.Bxc6#
- 1...Qb7
- 2.Sd5#
- 2.Sd3#
- 2.Be4#
- 2.Bd5#
- 2.Bc6#
- 2.Bxb7#
- 1...Qa6
- 2.Sd5#
- 2.Be2#
- 1...Qa7
- 2.Sd5#
- 2.Sd3#
- 2.Bd1#
- 2.Be2#
- 2.Be4#
- 2.Bg4#
- 2.Bd5#
- 2.Bxh5#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Qb8
- 2.Sd5#
- 2.Sd3#
- 2.Bd1#
- 2.Be2#
- 2.Be4#
- 2.Bg4#
- 2.Bd5#
- 2.Bxh5#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Qc8
- 2.Sd5#
- 2.Sd3#
- 2.Bd1#
- 2.Be2#
- 2.Be4#
- 2.Bg4#
- 2.Bd5#
- 2.Bxh5#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Qd8
- 2.Sd5#
- 2.Bd1#
- 2.Be2#
- 2.Be4#
- 2.Bg4#
- 2.Bd5#
- 2.Bxh5#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Qe8
- 2.Sd5#
- 2.Sd3#
- 2.Bd1#
- 2.Be2#
- 2.Be4#
- 2.Bg4#
- 2.Bd5#
- 2.Bxh5#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Qf8
- 2.Sd5#
- 2.Sd3#
- 2.Bd1#
- 2.Be2#
- 2.Be4#
- 2.Bg4#
- 2.Bd5#
- 2.Bxh5#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Qh8
- 2.Sd5#
- 2.Sd3#
- 2.Bd1#
- 2.Be2#
- 2.Be4#
- 2.Bg4#
- 2.Bd5#
- 2.Bxh5#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Rxe3!
- threat
- 1.Bh3?
- threat
- 2.Sd5#
- 1...Rg5+
- 2.Sg4#
- 1...Rxe3
- 2.Qf5#
- 1...Rxc5
- 2.Sc4#
- 1...Re4
- 2.Sd3#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Sc4#
- 2.Sg4#
- 2.Qxf5#
- 1...Re6
- 2.Qf5#
- 1...Re7
- 2.Qf5#
- 1...Re8
- 2.Qf5#
- 1...Qd5
- 2.Sxd5#
- 1...Qg8+!
- threat
- 1.Bd7?
- threat
- 2.Sd5#
- 1...Rg5+
- 2.Sg4#
- 1...Rxe3
- 2.Qf5#
- 1...Rxc5
- 2.Sc4#
- 1...Re4
- 2.Sd3#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Qxf5#
- 1...Re6
- 2.Qf5#
- 1...Re7
- 2.Qf5#
- 1...Re8
- 2.Qf5#
- 1...Qd5
- 2.Sxd5#
- 1...Qg8+!
- threat
- 1.Qe4+?
- 1...Rxe4
- 2.Sd3#
- 1...Qxe4!
- 1...Rxe4
- 1.Qg6?
- threat
- 2.Sd5#
- 2.Sd3#
- 1...Rxe3
- 2.Sd3#
- 2.Qf5#
- 2.Qg5#
- 1...Rxc5
- 2.Sc4#
- 1...Re4
- 2.Sd3#
- 2.Qf5#
- 2.Qg5#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Sc4#
- 2.Qxf5#
- 1...Rg5
- 2.Sd3#
- 2.Qxg5#
- 1...Re6
- 2.Sd3#
- 2.Qf5#
- 2.Qg5#
- 1...Re7
- 2.Sd3#
- 2.Qf5#
- 2.Qg5#
- 1...Re8
- 2.Sd3#
- 2.Qf5#
- 2.Qg5#
- 1...Qe4
- 2.Sd5#
- 1...Qd5
- 2.Sxd5#
- 1...Qa6
- 2.Sd5#
- 2.Rxf3#
- 1...Qd8
- 2.Sd5#
- 2.Rxf3#
- 1...fxg6!
- threat
- 1.Qb4+?
- 1...Qe4
- 2.Sd3#
- 2.Rxf3#
- 1...Re4
- 2.Sd3#
- 1...axb4!
- 1...Qe4
- 1.Kh3?
- Keys
- 1.Bc8!
- threat
- 2.Sd5#
- 1...Rg5+
- 2.Sg4#
- 1...Qxc8
- 2.Rxf3#
- 1...Rxe3
- 2.Qf5#
- 1...Rxc5
- 2.Sc4#
- 1...Re4
- 2.Sd3#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Qxf5#
- 1...Re6
- 2.Qf5#
- 1...Re7
- 2.Qf5#
- 1...Re8
- 2.Qf5#
- 1...Qd5
- 2.Sxd5#
- threat
- 1.Bc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(g);N_GUARD::R1(C),XS(a)
- Q(g);N_GUARD,P_PINB(F)::R1(C),XS(a)
- R(d);N_GUARD,P_SPINR(d),XS(E)::QAR1(A)
- R(d);SBLOCK::S(H)
- R(d);N_GUARD,S_CUTQ(g)::QAR1(A)
- R(d);N_GUARD::QAR1(A),XR(d)
- R(d);N_GUARD::QAR1(A)
- P(e);SBLOCK,XB(F)::B(B)+S(E),DCHECK
- Tries
- Try
- K(D);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD,P_SPINR(d),XS(E)::QAR1(A)
- R(d);N_GUARD,XS(H)::B(B)+S(E)
- R(d);SBLOCK::S(H)
- R(d);N_GUARD,S_CUTQ(g)::QAR1(A)
- R(d);N_GUARD::B(B)+S(E)
- R(d);N_GUARD::QAR1(A)
- Refutation
- P(e);CHECK,XB(F)
- Try
- S(E);CHECK
- Vars
- R(d);P_SPINR(d)::QAR1(A)
- Refutation
- K(b);N_SPINS(a),P-FLIGHT,XB(F)
- Try
- S(E);CHECK
- Vars
- R(d);P_SPINR(d)::QAR1(A)
- Refutation
- K(b);N_SPINS(a),P-FLIGHT,XB(F)
- Try
- S(H);CHECK
- Vars
- R(d);XS(H)::QAR1(A)
- Refutation
- P(f);XS(H)
- Try
- B(F);P_SPINB(F),XS(a)
- Threat
- DUALS(7)
- Vars
- Q(g);CHECK,OGATE,P_SPINQ(g),XB(F)::R1(C),XQ(g)
- Q(g);CHECK,N_PINB(F)::R(C)+B(F)
- R(d);CHECK,N_GUARD::B(B)+S(E)
- R(d);N_GUARD,XS(H)::B(B)+S(E)
- R(d);N_PINB(F)::S(H)
- R(d);N_GUARD,N_PINB(F),S_CUTQ(g)::QAR1(A)
- Q(g);::R(C)+B(F),XQ(g)
- Refutation
- R(d);P_SPINR(d),XS(E)
- Try
- B(F);
- Threat
- B(B)+S(E),DCHECK
- Vars
- R(d);CHECK,N_GUARD::B(B)+S(E)
- R(d);N_GUARD,P_SPINR(d),XS(E)::QAR1(A)
- R(d);N_GUARD,XS(H)::B(B)+S(E)
- R(d);SBLOCK::S(H)
- R(d);N_GUARD,S_CUTQ(g)::QAR1(A)
- R(d);N_GUARD::QAR1(A)
- Q(g);::B(B)+S(E),DCHECK,XQ(g)
- Refutation
- Q(g);CHECK
- Try
- B(F);
- Threat
- B(B)+S(E),DCHECK
- Vars
- R(d);CHECK,N_GUARD::B(B)+S(E)
- R(d);N_GUARD,P_SPINR(d),XS(E)::QAR1(A)
- R(d);N_GUARD,XS(H)::B(B)+S(E)
- R(d);SBLOCK::S(H)
- R(d);N_GUARD,S_CUTQ(g)::QAR1(A)
- R(d);N_GUARD::QAR1(A),XR(d)
- R(d);N_GUARD::QAR1(A)
- Q(g);::B(B)+S(E),DCHECK,XQ(g)
- Refutation
- Q(g);CHECK
- Try
- Q(A);CHECK
- Vars
- R(d);SBLOCK,XQ(A)::S(H)
- Refutation
- Q(g);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD,XS(H)::B(B)+S(E)
- R(d);N_GUARD,S_CUTQ(g)::QAR1(A)
- Q(g);::B(B)+S(E),DCHECK
- Q(g);::B(B)+S(E),DCHECK,XQ(g)
- Refutation
- P(f);XQ(A)
- Try
- Q(A);CHECK
- Vars
- R(d);P_SPINR(d)::S(H)
- Refutation
- P(c);XQ(A)
- Try
- Actual
- B(F);
- Threat
- B(B)+S(E),DCHECK
- Vars
- R(d);CHECK,N_GUARD::B(B)+S(E)
- Q(g);N_GUARD,XB(F)::R1(C),XS(a)
- R(d);N_GUARD,P_SPINR(d),XS(E)::QAR1(A)
- R(d);N_GUARD,XS(H)::B(B)+S(E)
- R(d);SBLOCK::S(H)
- R(d);N_GUARD,S_CUTQ(g)::QAR1(A)
- R(d);N_GUARD::QAR1(A),XR(d)
- R(d);N_GUARD::QAR1(A)
- Q(g);::B(B)+S(E),DCHECK,XQ(g)
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).