MESON Chess Problem Database
Problem Display
PID: 69934 (q1b1B3/1P1PkNpN/6R1/7R/8/b3rPPK/8/3Q4 w - - 0 1)
Kipping, Cyril Stanley
Chess, 1949
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.bxc8S#
- 1...Qa5
- 2.bxc8S#
- 1...Qa7
- 2.bxc8S#
- 1...Re1
- 2.Qxe1#
- 1...Re2
- 2.Qxe2#
- 1...Rb3
- 2.Re5#
- 1...Rc3
- 2.Re5#
- 1...Rd3
- 2.Re5#
- 1...Rxf3
- 2.Re5#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.d8Q#
- 1...Bc1
- 2.Qd6#
- 1...Bb2
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Bxd7+
- 2.Qxd7#
- 1...Qa4
- Tries
- 1.Kg2?
- threat
- 2.d8Q#
- 1...Re2+
- 2.Qxe2#
- 1...Bxd7
- 2.Qxd7#
- 1...Qa5
- 2.bxc8S#
- 1...Rd3
- 2.Re5#
- 1...Bxb7!
- threat
- 1.Kh2?
- threat
- 2.d8Q#
- 1...Re2+
- 2.Qxe2#
- 1...Bxd7
- 2.Qxd7#
- 1...Qa5
- 2.bxc8S#
- 1...Rd3
- 2.Re5#
- 1...Bxb7!
- threat
- 1.Rf5?
- threat
- 2.d8Q#
- 1...Bxd7
- 2.Qxd7#
- 1...Qa5
- 2.bxc8S#
- 1...Rd3
- 2.Re5#
- 1...Bxb7!
- threat
- 1.Re6+?
- 1...Rxe6
- 2.d8Q#
- 1...Kxe6!
- 1...Rxe6
- 1.Qd4?
- threat
- 2.Qxe3#
- 2.Qh4#
- 1...Bxd7+
- 2.Qxd7#
- 1...Qxb7
- 2.Qh4#
- 1...Rxf3
- 2.Re5#
- 2.Qe5#
- 2.Qe4#
- 1...Bxb7
- 2.Qh4#
- 1...Qa4
- 2.bxc8S#
- 1...Qa5
- 2.bxc8S#
- 1...Qa7
- 2.Qh4#
- 2.bxc8S#
- 1...Qb8
- 2.Qh4#
- 1...Re1
- 2.Qh4#
- 1...Re2
- 2.Qh4#
- 1...Rb3
- 2.Re5#
- 2.Qe5#
- 2.Qe4#
- 2.Qh4#
- 1...Rc3
- 2.Re5#
- 2.Qe5#
- 2.Qe4#
- 2.Qh4#
- 1...Rd3
- 2.Re5#
- 2.Qe5#
- 2.Qe4#
- 2.Qh4#
- 1...Re4
- 2.Qxe4#
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 1...Re6
- 2.d8Q#
- 1...Bc1
- 2.Qc5#
- 2.Qb4#
- 2.Qh4#
- 2.Qd6#
- 1...Bb2
- 2.Qc5#
- 2.Qb4#
- 2.Qd6#
- 1...Bc5
- 2.Qxc5#
- 2.Qh4#
- 1...Bd6
- 2.Qh4#
- 2.Qxd6#
- 1...Qa6!
- threat
- 1.Qd5?
- threat
- 2.Qg5#
- 1...Bxd7+
- 2.Qxd7#
- 1...Rxf3
- 2.Re5#
- 2.Re6#
- 2.Qe4#
- 2.Qe6#
- 2.Qe5#
- 1...Qa5
- 2.bxc8S#
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 1...Re6
- 2.Rxe6#
- 2.Qxe6#
- 2.d8Q#
- 1...Bb2
- 2.Qc5#
- 2.Qd6#
- 1...Qa6!
- threat
- 1.dxc8Q?
- threat
- 2.Qcd7#
- 2.Qdd7#
- 2.Qdd8#
- 1...Qxb7
- 2.Qdd8#
- 2.Qcd8#
- 1...Qa4
- 2.Qdd8#
- 2.Qcd8#
- 1...Qa5
- 2.Qcd7#
- 2.Qdd7#
- 1...Rd3
- 2.Re5#
- 2.Re6#
- 2.Qe6#
- 1...Bd6
- 2.Qd7#
- 2.Qxd6#
- 1...Qxc8+!
- threat
- 1.dxc8R?
- threat
- 2.Qd7#
- 2.Qd8#
- 1...Qxb7
- 2.Qd8#
- 1...Qa4
- 2.Qd8#
- 1...Qa5
- 2.Qd7#
- 1...Rd3
- 2.Re5#
- 1...Bd6
- 2.Qxd6#
- 1...Qxc8+!
- threat
- 1.Kg2?
- Keys
- 1.Qa4!
- threat
- 2.Qh4#
- 1...Bxd7+
- 2.Qxd7#
- 1...Qxa4
- 2.bxc8S#
- 1...Rxf3
- 2.Re5#
- 2.Qe4#
- 1...Qa5
- 2.bxc8S#
- 2.dxc8S#
- 1...Qa6
- 2.dxc8S#
- 1...Re4
- 2.Qxe4#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.d8Q#
- 2.d8B#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- Q(e);N_GUARD::PXB(f)=S
- R(b);OGATEB::QAR(A),XR(b)
- R(b);N_GUARD::R(E)
- R(b);N_GUARD,N_PINP(H),P_PINP(C),XP(B)::R(E)
- R(b);N_GUARD::R(E),XR(b)
- R(b);N_PINP(H)::P=Q
- B(a);N_GUARD::QAB1(A)
- B(a);N_GUARD::QAB1(A),XB(a)
- B(f);CHECK,OGATE,XP(H)::QAR1(A),XB(f)
- Tries
- Try
- K(D);N_SPINP(H),S_FLIGHT
- Threat
- P=Q
- Vars
- R(b);CHECK,OGATEB::QAR(A),XR(b)
- B(f);OGATE,XP(H)::QAR1(A),XB(f)
- Q(e);N_GUARD::PXB(f)=S
- R(b);N_GUARD::R(E)
- Refutation
- B(f);P_PINP(B),XP(G)
- Try
- K(D);N_SPINP(H),P-FLIGHT
- Threat
- P=Q
- Vars
- R(b);CHECK,OGATEB::QAR(A),XR(b)
- B(f);OGATE,XP(H)::QAR1(A),XB(f)
- Q(e);N_GUARD::PXB(f)=S
- R(b);N_GUARD::R(E)
- Refutation
- B(f);XP(G)
- Try
- R(E);N_SPINP(H)
- Threat
- P=Q
- Vars
- B(f);OGATE,P_PINR(E),XP(H)::QAR1(A),XB(f)
- Q(e);N_GUARD::PXB(f)=S
- R(b);N_GUARD::R(E)
- Refutation
- B(f);XP(G)
- Try
- R(F);CHECK,N_SPINP(H)
- Vars
- R(b);SBLOCK,XR(F)::P=Q
- Refutation
- K(c);P-FLIGHT,XR(F)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,OGATE,XP(H)::QAR1(A),XB(f)
- Q(e);XP(G)::QAB(A)
- B(f);N_PINP(H),XP(G)::QAB(A)
- Q(e);N_GUARD::PXB(f)=S
- Q(e);::QAB(A)
- R(b);::QAB(A)
- R(b);N_GUARD::QAR(A),XR(b)
- R(b);N_PINP(H)::P=Q
- Refutation
- Q(e);
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- B(f);CHECK,OGATE,XP(H)::QAR1(A),XB(f)
- Q(e);N_GUARD::PXB(f)=S
- Refutation
- Q(e);
- Try
- P(H);N_SPINP(H),XB(f)
- Threat
- DUALS(3)
- Refutation
- Q(e);CHECK,XQ(H)
- Try
- P(H);N_SPINP(H),XB(f)
- Threat
- DUALS(2)
- Vars
- Q(e);XP(G)::QAB1(A)
- Q(e);::QAB1(A)
- Q(e);::QAR1(A)
- R(b);N_GUARD::R(E)
- B(a);N_GUARD::QAB1(A),XB(a)
- Refutation
- Q(e);CHECK,XR(H)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- B(f);CHECK,OGATE,XP(H)::QAR1(A),XB(f)
- Q(e);N_GUARD,XQ(A)::PXB(f)=S
- Q(e);N_GUARD::PXB(f)=S
- R(b);N_GUARD::QAR(A),XR(b)
- R(b);N_GUARD::R(E),XR(b)
- R(b);N_PINP(H)::P=Q
- B(a);N_GUARD::QAB(A)
- B(a);N_GUARD::QAB(A),XB(a)
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).