MESON Chess Problem Database
Problem Display
PID: 17322 (2Q1K1B1/2pP1PB1/1p2k1b1/1q2pN1p/3R3N/8/2R5/8 w - - 0 1)
Mansfield, Comins
4th Prize, Chess, 1946
#2
10 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qe2
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd3
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qc4
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qa6
- 2.Rc6#
- 2.d8S#
- 1...Qc6
- 2.Rxc6#
- 1...Qxd7+
- 2.Qxd7#
- 1...Qb1
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qb2
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qb3
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qb4
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qa5
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qc5
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd5
- 2.d8S#
- 1...Bxf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bxf7+
- 2.Bxf7#
- 1...Bh7
- 2.f8S#
- 1...c5
- 2.Rd6#
- 1...c6
- 2.Rd6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qf1
- Tries
- 1.Kd8?
- threat
- 2.f8S#
- 1...Qxd7+
- 2.Qxd7#
- 1...Bxf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bxf7!
- threat
- 1.Sxg6?
- threat
- 2.f8Q#
- 2.f8R#
- 1...Qxd7+
- 2.Qxd7#
- 1...exd4
- 2.f8Q#
- 2.f8R#
- 1...Qf1
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qe2
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qd3
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qa4
- 2.f8Q#
- 2.f8R#
- 1...Qc4
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qa6
- 2.d8S#
- 2.f8Q#
- 2.f8R#
- 1...Qc6
- 2.f8Q#
- 2.f8R#
- 1...Qb1
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qb2
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qb3
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qb4
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qa5
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qc5
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Qd5
- 2.d8S#
- 2.f8Q#
- 2.f8R#
- 1...e4
- 2.f8Q#
- 2.f8R#
- 1...h4
- 2.f8Q#
- 2.f8R#
- 1...c5
- 2.f8Q#
- 2.f8R#
- 1...c6
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 2.f8Q#
- 2.f8R#
- 1...Kxf5!
- threat
- 1.Re2?
- 1...Qxd7+
- 2.Qxd7#
- 1...Bxf7+
- 2.Bxf7#
- 1...Qxe2
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Bxf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Qa4
- 2.Rxe5#
- 1...Qd3
- 2.Rxe5#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qc4
- 2.Rxe5#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qa6
- 2.Rxe5#
- 2.d8S#
- 1...Qc6
- 2.Rxe5#
- 1...Qb1
- 2.Rxe5#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qb2
- 2.Rxe5#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qb3
- 2.Rxe5#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qb4
- 2.Rxe5#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qa5
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qc5
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd5
- 2.d8S#
- 1...Bh7
- 2.f8S#
- 1...c5
- 2.Rxe5#
- 2.Rd6#
- 1...c6
- 2.Rd6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...e4!
- 1...Qxd7+
- 1.Rg2?
- threat
- 2.Rxg6#
- 1...Qxd7+
- 2.Qxd7#
- 1...Bxf7+
- 2.Bxf7#
- 1...Bxf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bh7
- 2.f8S#
- 1...exd4!
- threat
- 1.Rxc7?
- threat
- 2.Rd6#
- 1...Qxd7+
- 2.Qxd7#
- 1...Bxf7+
- 2.Bxf7#
- 1...Bxf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Qd3
- 2.Rc6#
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qc6
- 2.Rxc6#
- 1...Qb4
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qc5
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd5
- 2.d8S#
- 1...exd4!
- threat
- 1.Qxc7?
- threat
- 2.Rd6#
- 2.Qd6#
- 1...Qxd7+
- 2.Qxd7#
- 1...Bxf7+
- 2.Bxf7#
- 1...exd4
- 2.Qd6#
- 1...Qd3
- 2.Rc6#
- 2.Qxe5#
- 2.Qxb6#
- 2.Qd6#
- 2.Qc6#
- 2.d8S#
- 1...Qc6
- 2.Rxc6#
- 2.Qxe5#
- 2.Qxc6#
- 1...Qb4
- 2.Qxe5#
- 2.d8S#
- 1...Qc5
- 2.d8S#
- 1...Qd5!
- threat
- 1.Qd8?
- threat
- 2.Qf6#
- 2.Qe7#
- 1...Qxd7+
- 2.Qxd7#
- 1...Bxf7+
- 2.Bxf7#
- 1...Qb4
- 2.Qf6#
- 1...Qc5
- 2.Qf6#
- 1...exd4!
- threat
- 1.Kd8?
- Keys
- 1.Re4!
- 1...Qxd7+
- 2.Qxd7#
- 1...Bxf7+
- 2.Bxf7#
- 1...Kd5
- 2.Rxe5#
- 1...Bxf5
- 2.f8Q#
- 2.f8B#
- 1...Qa4
- 2.Rxe5#
- 1...Qf1
- 2.Rxe5#
- 2.d8Q#
- 2.d8R#
- 1...Qe2
- 2.d8Q#
- 2.d8R#
- 1...Qd3
- 2.Rxe5#
- 1...Qc4
- 2.Rxe5#
- 2.d8Q#
- 2.d8R#
- 1...Qa6
- 2.Rxe5#
- 1...Qc6
- 2.Rxe5#
- 1...Qb1
- 2.Rxe5#
- 2.d8Q#
- 2.d8R#
- 1...Qb2
- 2.d8Q#
- 2.d8R#
- 1...Qb3
- 2.Rxe5#
- 2.d8Q#
- 2.d8R#
- 1...Qb4
- 2.Rxe5#
- 2.d8Q#
- 2.d8R#
- 1...Qa5
- 2.d8Q#
- 2.d8R#
- 1...Qc5
- 2.d8Q#
- 2.d8R#
- 1...Qd5
- 2.d8S#
- 1...Bh7
- 2.f8S#
- 1...c5
- 2.Rxe5#
- 1...c6
- 2.d8Q#
- 2.d8R#
- 1...Qxd7+
- 1.Re4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Q(a);N_GUARD::R(A),XQ(a)
- Q(a);CHECK,OGATE,P_PINP(F),P_SPINQ(a),XP(E)::QAB1(H),XQ(a)
- Q(a);N_PINP(E),P_PINP(F)::P=S
- B(f);CHECK,OGATE,P_SPINB(f),XP(F)::B(J),XB(f)
- B(f);OGATE::P=S
- P(g);N_GUARD::R1(B)
- Tries
- Try
- K(I);N_SPINP(E),P-FLIGHT
- Threat
- P=S
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(E)::QAB1(H),XQ(a)
- Refutation
- B(f);P_SPINB(f),XP(F)
- Try
- S(C);XB(f)
- Threat
- P=Q
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(E)::QAB1(H),XQ(a)
- P(b);XR(B)::P=Q
- Q(a);::P=Q
- P(b);::P=Q
- P(c);::P=Q
- P(g);::P=Q
- Refutation
- K(e);S_FLIGHT,XS(D)
- Try
- R(A);P_PINP(b)
- Vars
- Q(a);CHECK,OGATE,P_PINP(F),P_SPINQ(a),XP(E)::QAB1(H),XQ(a)
- B(f);CHECK,OGATE,P_SPINB(f),XP(F)::B(J),XB(f)
- Q(a);N_GUARD::R1(A),XP(b)
- Q(a);N_PINP(E),P_PINP(F)::P=S
- B(f);OGATE::P=S
- Refutation
- P(b);
- Try
- R(A);
- Threat
- R(A),XB(f)
- Vars
- Q(a);CHECK,OGATE,P_PINP(F),P_SPINQ(a),XP(E)::QAB1(H),XQ(a)
- B(f);CHECK,OGATE,P_SPINB(f),XP(F)::B(J),XB(f)
- B(f);OGATE::P=S
- Refutation
- P(b);XR(B)
- Try
- R(A);XP(g)
- Threat
- R1(B)
- Vars
- Q(a);CHECK,OGATE,P_PINP(F),P_SPINQ(a),XP(E)::QAB1(H),XQ(a)
- B(f);CHECK,OGATE,P_SPINB(f),XP(F)::B(J),XB(f)
- Q(a);N_GUARD::R(A),XQ(a)
- Q(a);N_PINP(E),P_PINP(F)::P=S
- Refutation
- P(b);XR(B)
- Try
- Q(H);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE,P_PINP(F),XP(E)::QAB1(H),XQ(a)
- B(f);CHECK,OGATE,P_SPINB(f),XP(F)::B(J),XB(f)
- P(b);XR(B)::QAR1(H)
- Q(a);N_PINP(E),P_PINP(F)::P=S
- Refutation
- Q(a);N_PINP(E),P_PINP(F)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE,P_PINP(F),XP(E)::QAB1(H),XQ(a)
- B(f);CHECK,OGATE,P_SPINB(f),XP(F)::B(J),XB(f)
- Q(a);N_PINP(E),P_PINP(F)::QAR1(H)
- Refutation
- P(b);XR(B)
- Try
- Actual
- R(B);P_PINP(b)
- Vars
- Q(a);CHECK,OGATE,P_PINP(F),P_SPINQ(a),XP(E)::QAB1(H),XQ(a)
- B(f);CHECK,OGATE,P_SPINB(f),XP(F)::B(J),XB(f)
- K(e);N_SPINP(b),S_FLIGHT::R1(B),XP(b)
- B(f);OGATE,XS(D)::P=Q
- Q(a);N_GUARD::R1(B),XP(b)
- Q(a);N_PINP(E),P_PINP(F)::P=Q
- Q(a);N_GUARD,N_PINP(E),P_PINP(F)::R1(B),XP(b)
- Q(a);N_PINP(E),P_PINP(F),SBLOCK::P=S
- B(f);OGATE::P=S
- P(g);S_CUTQ(a)::R1(B),XP(b)
- P(g);N_PINP(E),P_PINP(F)::P=Q
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).