MESON Chess Problem Database
Problem Display
PID: 18819 (8/1p6/pP5p/1R5q/k2KQP2/2B1P2r/PP2B3/3b4 w - - 0 1)
Mansfield, Comins
2nd HM., Problem (Zagreb), 1958
#2
10 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qxe2
- 2.Ra5#
- 1...Qf3
- 2.Ra5#
- 1...Qg4
- 2.Kc5#
- 2.Kd5#
- 2.Ke5#
- 2.Ra5#
- 1...Qg6
- 2.Ra5#
- 1...Qf7
- 2.Ra5#
- 1...Qe8
- 2.Ra5#
- 1...Qh4
- 2.Kc5#
- 2.Kd5#
- 2.Ke5#
- 2.Ra5#
- 1...Qc5+
- 2.Kxc5#
- 1...Qd5+
- 2.Kxd5#
- 1...Qe5+
- 2.Kxe5#
- 1...Rxe3
- 2.Kxe3#
- 1...Bc2
- 2.Qxc2#
- 1...Bb3
- 2.axb3#
- 1...Qxe2
- Tries
- 1.Rc5?
- threat
- 2.Kd3#
- 1...Qxc5+
- 2.Kxc5#
- 1...Qd5+
- 2.Kxd5#
- 1...Qe5+
- 2.Kxe5#
- 1...Qxe2
- 2.Ra5#
- 1...Rxe3
- 2.Kxe3#
- 1...Bxe2
- 2.Qc2#
- 1...Qf3
- 2.Ra5#
- 1...Qg6
- 2.Bxd1#
- 2.Ra5#
- 1...Qf7
- 2.Ra5#
- 1...Qe8
- 2.Bxd1#
- 2.Ra5#
- 2.Qxe8#
- 1...Qf5
- 2.Bxd1#
- 1...Bc2
- 2.Qxc2#
- 1...Bb3!
- threat
- 1.Rd5?
- threat
- 2.Kd3#
- 2.Kc5#
- 1...Qxd5+
- 2.Kxd5#
- 1...Qe5+
- 2.Kxe5#
- 1...Qxe2
- 2.Ra5#
- 1...Rxe3
- 2.Kxe3#
- 1...Bxe2
- 2.Qc2#
- 1...Qf3
- 2.Ra5#
- 2.Qe8#
- 1...Qg6
- 2.Bxd1#
- 2.Ra5#
- 1...Qe8
- 2.Bxd1#
- 2.Ra5#
- 2.Qxe8#
- 1...Qf5
- 2.Bxd1#
- 1...Bc2
- 2.Qxc2#
- 1...Bb3!
- threat
- 1.Re5?
- threat
- 2.Kd3#
- 2.Kc5#
- 2.Kd5#
- 1...Qxe5+
- 2.Kxe5#
- 1...Qxe2
- 2.Ra5#
- 1...Rxe3
- 2.Kxe3#
- 1...Bxe2
- 2.Qc2#
- 1...Qf3
- 2.Ra5#
- 1...Qg6
- 2.Bxd1#
- 2.Ra5#
- 1...Qf7
- 2.Ra5#
- 1...Qf5
- 2.Bxd1#
- 1...Bc2
- 2.Qxc2#
- 1...Bb3!
- threat
- 1.Rxh5?
- threat
- 2.Kd3#
- 2.Kc5#
- 2.Kd5#
- 2.Ke5#
- 2.Bxd1#
- 2.Ra5#
- 2.Qe8#
- 1...Rxe3
- 2.Kxe3#
- 2.Bxd1#
- 2.Ra5#
- 1...Bxe2
- 2.Ra5#
- 2.Qc2#
- 1...Bb3
- 2.Ra5#
- 2.Qe8#
- 1...Rh1
- 2.Kd3#
- 2.Kc5#
- 2.Kd5#
- 2.Ke5#
- 2.Ra5#
- 2.Qe8#
- 1...Rh2
- 2.Kd3#
- 2.Kc5#
- 2.Kd5#
- 2.Ke5#
- 2.Ra5#
- 2.Qe8#
- 1...Bc2
- 2.Ra5#
- 2.Qxc2#
- 2.Qe8#
- 1...a5
- 2.Kd3#
- 2.Kc5#
- 2.Kd5#
- 2.Ke5#
- 2.Bxd1#
- 2.Bb5#
- 2.Rxa5#
- 2.Qe8#
- 1...Rxh5!
- threat
- 1.Qf5?
- threat
- 2.Rb4#
- 2.Ra5#
- 1...axb5
- 2.Bxb5#
- 1...a5
- 2.Rxa5#
- 1...Qxf5!
- threat
- 1.Qe5?
- threat
- 2.Rb4#
- 2.Ra5#
- 1...axb5
- 2.Bxb5#
- 1...a5
- 2.Rxa5#
- 1...Qxe5+!
- threat
- 1.Rc5?
- Keys
- 1.Qe8!
- threat
- 2.Ra5#
- 2.Rxh5#
- 1...Qc5+
- 2.Rxc5#
- 1...Qd5+
- 2.Rxd5#
- 1...Qe5+
- 2.Rxe5#
- 1...Qxe2
- 2.Ra5#
- 1...Qxe8
- 2.Ra5#
- 1...Qxb5
- 2.Bxd1#
- 1...Rxe3
- 2.Ra5#
- 1...Bxe2
- 2.Ra5#
- 1...axb5
- 2.Qa8#
- 1...Qf3
- 2.Ra5#
- 2.Rd5#
- 1...Qg4
- 2.Ra5#
- 2.Rf5#
- 1...Qg6
- 2.Ra5#
- 1...Qf7
- 2.Ra5#
- 1...Qh4
- 2.Bxd1#
- 2.Rb3#
- 2.Ra5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Qf5
- 2.Ra5#
- 2.Rxf5#
- 1...Qg5
- 2.Bxd1#
- 2.Ra5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rxg5#
- 1...a5
- 2.Rb4#
- 2.Rxa5#
- 2.Rxh5#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(d);N_GUARD,XB(C)::R1(I)
- Q(d);N_GUARD::R1(I)
- Q(d);CHECK::QAR(G)+K(F),XQ(d)
- R(b);XP(E)::QAR(G)+K(F),XR(b)
- B(a);N_GUARD::QAB(G),XB(a)
- B(a);OGATE::P(A),XB(a)
- Tries
- Try
- R(I);
- Threat
- QAR(G)+K(F)
- Vars
- Q(d);CHECK,XR(I)::QAR(G)+K(F),XQ(d)
- Q(d);CHECK::QAR(G)+K(F),XQ(d)
- Q(d);N_GUARD,XB(C)::R1(I)
- R(b);XP(E)::QAR(G)+K(F),XR(b)
- B(a);N_GUARD,XB(C)::QAB(G)
- Q(d);N_GUARD::R1(I)
- Q(d);N_GUARD::B(C),XB(a)
- B(a);N_GUARD::QAB(G),XB(a)
- Refutation
- B(a);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,XR(I)::QAR(G)+K(F),XQ(d)
- Q(d);CHECK::QAR(G)+K(F),XQ(d)
- Q(d);N_GUARD,XB(C)::R1(I)
- R(b);XP(E)::QAR(G)+K(F),XR(b)
- B(a);N_GUARD,XB(C)::QAB(G)
- Q(d);N_GUARD::B(C),XB(a)
- B(a);N_GUARD::QAB(G),XB(a)
- Refutation
- B(a);
- Try
- R(I);
- Threat
- DUALS(3)
- Vars
- Q(d);CHECK,XR(I)::QAR(G)+K(F),XQ(d)
- Q(d);N_GUARD,XB(C)::R1(I)
- R(b);XP(E)::QAR(G)+K(F),XR(b)
- B(a);N_GUARD,XB(C)::QAB(G)
- Q(d);N_GUARD::R1(I)
- Q(d);N_GUARD::B(C),XB(a)
- B(a);N_GUARD::QAB(G),XB(a)
- Refutation
- B(a);
- Try
- R(I);XQ(d)
- Threat
- DUALS(7)
- Refutation
- R(b);XR(I)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XR(I)::B(C),XP(e)
- P(e);::R1(I),XP(e)
- Refutation
- Q(d);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XR(I)::B(C),XP(e)
- P(e);::R1(I),XP(e)
- Refutation
- Q(d);CHECK,XQ(G)
- Try
- Actual
- Q(G);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,N_GUARD::QAB(G)+R(I),XQ(d)
- Q(d);XB(C)::QAB(G)+R(I),DCHECK
- Q(d);XQ(G)::R1(I)
- Q(d);N_GUARD,P_SPINQ(d),XR(I)::B(C),XB(a)
- R(b);XP(E)::QAB(G)+R(I),DCHECK
- B(a);XB(C)::QAB(G)+R(I),DCHECK
- P(e);OGATEB,P_SPINP(e),XR(I)::QAR(G)
- Q(d);::QAB(G)+R(I),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).