MESON Chess Problem Database
Problem Display
PID: 74975 (1BqN1Kn1/p1P5/1p1k1P1Q/R7/N1P5/1p5B/7b/3r4 w - - 0 1)
Morse, Christopher Jeremy
2nd Prize, The Problemist, 1990
#2
10 + 8
| 81 | Chess | 2007 |
| 15 | British Chess Magazine | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qxh3
- 2.c8Q#
- 2.c8B#
- 1...Qg4
- 2.c8Q#
- 2.c8B#
- 1...Qf5
- 2.c8Q#
- 2.c8B#
- 1...Qa6
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qe6
- 2.c8Q#
- 2.c8B#
- 1...Qb7
- 2.c8S#
- 1...Qd7
- 2.c8S#
- 1...Qxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qxd8+
- 2.cxd8S#
- 1...Ra1
- 2.Rd5#
- 2.Qd2#
- 1...Rb1
- 2.Rd5#
- 2.Qd2#
- 1...Rc1
- 2.Rd5#
- 2.Qd2#
- 1...Re1
- 2.Rd5#
- 2.Qd2#
- 1...Rf1
- 2.Rd5#
- 2.Qd2#
- 1...Rg1
- 2.Rd5#
- 2.Qd2#
- 1...Rh1
- 2.Rd5#
- 2.Qd2#
- 1...Rd2
- 2.Qxd2#
- 1...Rd5
- 2.Rxd5#
- 1...Bg1
- 2.Qf4#
- 1...Bf4
- 2.Qxf4#
- 1...Qxh3
- Keys
- 1.Qe3!
- 1...Qxd8+
- 2.cxd8S#
- 1...Qxh3
- 2.c8Q#
- 2.c8B#
- 1...Qxc7
- 2.Qe6#
- 1...Qxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxf6
- 2.Qe7#
- 1...bxa5
- 2.Qc5#
- 1...Qg4
- 2.c8Q#
- 2.c8B#
- 1...Qf5
- 2.c8Q#
- 2.c8B#
- 1...Qe6
- 2.Qxe6#
- 2.c8Q#
- 2.c8B#
- 1...Rd3
- 2.Qxd3#
- 1...Qa6
- 2.Qe6#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qb7
- 2.Qe6#
- 2.c8S#
- 1...Qd7
- 2.c8S#
- 1...Ra1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rb1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rc1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Re1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rf1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rg1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rh1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rd2
- 2.Qxd2#
- 1...Rd4
- 2.Qxd4#
- 1...Rd5
- 2.Rxd5#
- 1...Bg1
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 1...Bg3
- 2.Qxg3#
- 1...Bf4
- 2.Qxf4#
- 1...Be5
- 2.Qxe5#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...b2
- 2.Qa3#
- 1...b5
- 2.Qc5#
- 1...a6
- 2.Qxb6#
- 1...Qxd8+
- 1.Qe3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 2
- Sets
- Q(g);N_PINS(I),OGATE,XB(A)::P=Q
- Q(g);N_PINS(I),OGATE::P=Q
- Q(g);N_PINS(I),OGATE,P_PINP(E)::P=Q
- Q(g);N_PINS(I),OGATE::P=S
- Q(g);OGATE,XB(H)::PXQ(g)=Q
- Q(g);CHECK,OGATE,XS(I)::PXQ(g)=S
- R(a);N_GUARD::QAR(F),XR(a)
- R(a);N_GUARD::R1(D),XR(a)
- B(b);N_GUARD::QAB(F)
- B(b);N_GUARD::QAB(F),XB(b)
- Actual
- Q(F);
- Vars
- Q(g);CHECK,OGATE,XS(I)::PXQ(g)=S
- Q(g);N_PINS(I),OGATE,XB(A)::P=Q
- Q(g);N_GUARD,N_PINS(I),P_SPINQ(g),XP(G)::QAR1(F)
- Q(g);OGATE,XB(H)::PXQ(g)=Q
- S(h);N_GUARD,XP(E)::QAB1(F)
- P(d);N_GUARD,XR(D)::QAB1(F)
- Q(g);N_PINS(I),OGATE::P=Q
- Q(g);N_PINS(I),OGATE,P_PINP(E)::P=Q
- R(a);N_GUARD::QAR(F),XR(a)
- Q(g);N_PINS(I),OGATE::P=S
- R(a);N_GUARD::QAR2(F),XR(a)
- R(a);N_GUARD::R1(D),XR(a)
- B(b);N_GUARD::QAB(F),XB(b)
- B(b);N_GUARD::QAB1(F),XB(b)
- S(h);N_GUARD::QAB1(F)
- S(h);N_GUARD::QAB1(F),XS(h)
- P(c);OGATE::QAB(F)
- P(d);N_GUARD::QAB1(F)
- P(f);N_GUARD::QAR2(F),XP(d)
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).