MESON Chess Problem Database
Problem Display
PID: 15954 (4N3/2P2p2/1K1R2rQ/4k3/pR4B1/2PPN3/1r2Pq2/B1nb4 w - - 0 1)
Hicks, Geoffrey K
2nd Prize, The Problemist, 1989
#2
12 + 8
| 4827 | FIDE Album (1989-1991) | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sc4#
- 2.Qf4#
- 1...Qg1
- 2.Qf4#
- 1...Qxe3+
- 2.Qxe3#
- 1...Qg3
- 2.Sc4#
- 1...Qh4
- 2.Sc4#
- 2.Qf4#
- 1...Qf1
- 2.Sc4#
- 1...Qxe2
- 2.Sc4#
- 2.Qf4#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 1...Qh2
- 2.Sc4#
- 2.Qxh2#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Qxf4#
- 1...Qf5
- 2.Sc4#
- 1...Qf6
- 2.Sc4#
- 1...Ra2
- 2.Re4#
- 2.Rb5#
- 1...Rc2
- 2.Re4#
- 2.Rb5#
- 1...Rd2
- 2.Re4#
- 2.Rb5#
- 1...Rxe2
- 2.Re4#
- 2.Rb5#
- 1...Rxb4+
- 2.cxb4#
- 1...Rxg4
- 2.Rd5#
- 1...Rg5
- 2.Rd5#
- 1...Rxd6+
- 2.Qxd6#
- 1...Rg7
- 2.Rd5#
- 1...Rg8
- 2.Rd5#
- 1...Bb3
- 2.Re4#
- 1...Sb3
- 2.Re4#
- 1...f6
- 2.Rd5#
- 2.Re6#
- 1...Qe1
- Tries
- 1.Ka5?
- threat
- 2.Sc4#
- 2.Re4#
- 2.Rd5#
- 1...Qxe3
- 2.Qxe3#
- 1...Rxb4
- 2.Rd5#
- 2.cxb4#
- 1...Rxg4
- 2.Rd5#
- 1...Rxd6
- 2.Re4#
- 2.Qxd6#
- 1...Rxh6
- 2.Re4#
- 2.Rd5#
- 1...Sxd3
- 2.Rd5#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Rd5#
- 2.Qxf4#
- 1...Qf5
- 2.Sc4#
- 1...Rg5
- 2.Re4#
- 2.Rd5#
- 1...Bb3
- 2.Re4#
- 1...f5
- 2.Sc4#
- 1...Sb3+!
- threat
- 1.Ka6?
- threat
- 2.Sc4#
- 2.Re4#
- 1...Rxd6+
- 2.Qxd6#
- 1...Qxe3
- 2.Qxe3#
- 1...Rxb4
- 2.cxb4#
- 1...Rxg4
- 2.Rd5#
- 1...Rxh6
- 2.Re4#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Qxf4#
- 1...Qf5
- 2.Sc4#
- 1...Rg5
- 2.Re4#
- 2.Rd5#
- 1...Bb3
- 2.Re4#
- 1...f5
- 2.Sc4#
- 1...Sxd3!
- threat
- 1.Ka7?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Qxe3+
- 2.Qxe3#
- 1...Rxb4
- 2.Rd5#
- 2.cxb4#
- 1...Rxg4
- 2.Rd5#
- 1...Rxd6
- 2.Re4#
- 2.Qxd6#
- 1...Sxd3
- 2.Rd5#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Rd5#
- 2.Qxf4#
- 1...Qf5
- 2.Sc4#
- 1...Bb3
- 2.Re4#
- 1...f5!
- threat
- 1.Bxb2?
- threat
- 2.Re4#
- 2.Rb5#
- 2.c4#
- 1...Qxe3+
- 2.Qxe3#
- 1...Rxd6+
- 2.Qxd6#
- 1...Qxe2
- 2.Sc4#
- 2.Re4#
- 2.Rb5#
- 2.Qf4#
- 1...Rxg4
- 2.Rb5#
- 2.Rd5#
- 1...Rxh6
- 2.Re4#
- 1...Sxe2
- 2.Re4#
- 2.Rb5#
- 1...Qe1
- 2.Sc4#
- 2.Re4#
- 2.Rb5#
- 2.Qf4#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 2.c4#
- 1...Qf3
- 2.Sc4#
- 2.c4#
- 1...Qf4
- 2.Rb5#
- 2.Qxf4#
- 1...Qf5
- 2.Sc4#
- 2.Rb5#
- 2.c4#
- 1...Rg5
- 2.Re4#
- 2.Rd5#
- 1...Bb3
- 2.Re4#
- 2.c4#
- 1...Sa2
- 2.Re4#
- 2.Rb5#
- 1...Sb3
- 2.Re4#
- 1...a3
- 2.Re4#
- 2.Rb5#
- 1...f5
- 2.Rb5#
- 2.c4#
- 1...Sxd3!
- threat
- 1.Qg5+?
- 1...Qf5
- 2.Sc4#
- 2.Qxf5#
- 1...Rxg5
- 2.Rd5#
- 1...f5!
- 1...Qf5
- 1.Qh2+?
- 1...Qg3
- 2.Qxg3#
- 1...Qf4
- 2.Sc4#
- 2.Qxf4#
- 1...Qxh2!
- 1...Qg3
- 1.Qh5+?
- 1...Qf5
- 2.Qxf5#
- 1...Rg5
- 2.Rd5#
- 1...f5!
- 1...Qf5
- 1.c8Q?
- threat
- 2.Qc5#
- 1...Qxe3+
- 2.Qxe3#
- 1...Rxb4+
- 2.cxb4#
- 1...Rxd6+
- 2.Qxd6#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 2.Qf5#
- 1...Qf3
- 2.Sc4#
- 1...Bb3
- 2.Re4#
- 1...Sb3
- 2.Re4#
- 1...Sxd3!
- threat
- 1.c8R?
- threat
- 2.Rc5#
- 1...Qxe3+
- 2.Qxe3#
- 1...Rxb4+
- 2.cxb4#
- 1...Rxd6+
- 2.Qxd6#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 1...Qf3
- 2.Sc4#
- 1...Bb3
- 2.Re4#
- 1...Sb3
- 2.Re4#
- 1...Sxd3!
- threat
- 1.Ka5?
- Keys
- 1.Kb5!
- threat
- 2.Sc4#
- 2.Rd5#
- 1...Rxb4+
- 2.cxb4#
- 1...Qxe3
- 2.Qxe3#
- 1...Rxg4
- 2.Rd5#
- 1...Rxd6
- 2.Qxd6#
- 1...Rxh6
- 2.Rd5#
- 1...Sxd3
- 2.Rd5#
- 1...Qg2
- 2.Sc4#
- 2.Qf4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Rd5#
- 2.Qxf4#
- 1...Qf5
- 2.Sc4#
- 1...Rg5
- 2.Rd5#
- 1...Bb3
- 2.Re4#
- 1...f5
- 2.Sc4#
- threat
- 1.Kb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- Q(d);N_GUARD::QAB1(J)
- Q(d);CHECK,OGATE,XS(E)::QAR2(J),XQ(d)
- Q(d);N_PINS(E)::S(E)
- Q(d);N_GUARD,N_PINS(E)::QAB1(J),XQ(d)
- R(c);CHECK,OGATE,P_PINR(I),XR(F)::B(A)+P(C),XR(c)
- R(g);OGATE,XB(G)::R1(I)
- R(g);OGATE::R1(I)
- R(g);CHECK,OGATE,XR(I)::QAB1(J),XR(g)
- B(b);N_PINR(F),P_PINR(I)::R1(F)
- S(a);N_PINR(F),P_PINR(I)::R1(F)
- Tries
- Try
- K(H);N_SPINR(F),N_SPINS(E),S_FLIGHT
- Threat
- DUALS(3)
- Vars
- Q(d);OGATE,XS(E)::QAR2(J),XQ(d)
- R(g);XB(G)::R1(I)
- S(a);XP(D)::R1(I)
- Q(d);::S(E)
- B(b);::R1(F)
- P(h);::S(E)
- Refutation
- S(a);CHECK
- Try
- K(H);N_SPINR(F),N_SPINS(E),P-FLIGHT,P_SPINR(I)
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE,XR(I)::QAB1(J),XR(g)
- Q(d);OGATE,XS(E)::QAR2(J),XQ(d)
- R(c);OGATE,XR(F)::B(A)+P(C),XR(c)
- R(g);N_PINR(I),XB(G)::R1(I)
- R(g);XQ(J)::R1(F)
- Q(d);::S(E)
- Q(d);N_GUARD::QAB1(J),XQ(d)
- B(b);::R1(F)
- P(h);::S(E)
- Refutation
- S(a);XP(D)
- Try
- K(H);N_SPINR(F),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,XS(E)::QAR2(J),XQ(d)
- R(g);XB(G)::R1(I)
- S(a);XP(D)::R1(I)
- Q(d);N_PINS(E)::S(E)
- B(b);::R1(F)
- Refutation
- P(h);
- Try
- B(A);N_SPINR(F),P_SPINR(I),XR(c)
- Threat
- DUALS(3)
- Vars
- Q(d);CHECK,OGATE,XS(E)::QAR2(J),XQ(d)
- R(g);CHECK,OGATE,XR(I)::QAB1(J),XR(g)
- R(g);XQ(J)::R1(F)
- S(a);::R1(F)
- Refutation
- S(a);XP(D)
- Try
- Q(J);CHECK
- Vars
- R(g);OGATE,XQ(J)::R1(I)
- Refutation
- P(h);P_SPINP(h)
- Try
- Q(J);CHECK
- Vars
- Q(d);N_GUARD,N_PINS(E),P_SPINQ(d)::QAB(J),XQ(d)
- Refutation
- Q(d);N_PINS(E),XQ(J)
- Try
- Q(J);CHECK
- Vars
- Q(d);N_GUARD,N_PINS(E),P_SPINQ(d)::QAR1(J),XQ(d)
- R(g);OGATE,P_SPINR(g)::R1(I)
- Refutation
- P(h);P_SPINP(h)
- Try
- P(K);
- Threat
- QAR2(K)
- Vars
- Q(d);CHECK,OGATE,XS(E)::QAR2(J),XQ(d)
- R(c);CHECK,OGATE,P_PINR(I),XR(F)::B(A)+P(C),XR(c)
- R(g);CHECK,OGATE,XR(I)::QAB1(J),XR(g)
- Q(d);N_PINS(E)::S(E)
- B(b);N_PINR(F),P_PINR(I)::R1(F)
- S(a);N_PINR(F),P_PINR(I)::R1(F)
- Refutation
- S(a);XP(D)
- Try
- P(K);
- Threat
- R(K)
- Vars
- Q(d);CHECK,OGATE,XS(E)::QAR2(J),XQ(d)
- R(c);CHECK,OGATE,P_PINR(I),XR(F)::B(A)+P(C),XR(c)
- R(g);CHECK,OGATE,XR(I)::QAB1(J),XR(g)
- Q(d);N_PINS(E)::S(E)
- B(b);N_PINR(F),P_PINR(I)::R1(F)
- S(a);N_PINR(F),P_PINR(I)::R1(F)
- Refutation
- S(a);XP(D)
- Try
- Actual
- K(H);N_SPINS(E),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XR(F)::B(A)+P(C),XR(c)
- Q(d);OGATE,XS(E)::QAR2(J),XQ(d)
- R(g);XB(G)::R1(I)
- R(g);OGATE,XR(I)::QAB1(J),XR(g)
- R(g);XQ(J)::R1(I)
- S(a);XP(D)::R1(I)
- Q(d);::S(E)
- R(g);::R1(I)
- B(b);N_PINR(F)::R1(F)
- P(h);::S(E)
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).