MESON Chess Problem Database
Problem Display
PID: 62912 (1N5N/1p1Pr1n1/3pr1P1/4k3/4p1PB/2P1P3/Q4R1b/5K2 w - - 0 1)
Carwardine, JA
Chess, 1944
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Bxf6#
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Rf6
- Tries
- 1.Ke1?
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...Rf6
- 2.Bxf6#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...d5!
- 1...Rxg6
- 1.Ke2?
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...Rf6
- 2.Bxf6#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...d5!
- 1...Rxg6
- 1.Kg2?
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...Rf6
- 2.Bxf6#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...d5!
- 1...Rxg6
- 1.Bxe7?
- threat
- 2.Sf7#
- 1...Rf6
- 2.Bxf6#
- 1...Rxe7!
- threat
- 1.Rd2?
- threat
- 2.Rd5#
- 2.Qd5#
- 1...Rf7+
- 2.Sxf7#
- 1...Rxg6
- 2.Sxg6#
- 2.Qd5#
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 1...Rf6+!
- threat
- 1.Rf3?
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...d5
- 2.Qxh2#
- 1...Rf6
- 2.Bxf6#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...exf3!
- 1...Rxg6
- 1.Rf7?
- 1...Rf6+
- 2.Bxf6#
- 1...Rxf7+
- 2.Sxf7#
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...d5
- 2.Qxh2#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Re8!
- 1...Rf6+
- 1.Qb3?
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...Bg1
- 2.Bg3#
- 1...Rf6
- 2.Bxf6#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...d5!
- 1...Rxg6
- 1.Qc4?
- threat
- 2.Qd4#
- 1...Rxg6
- 2.Sxg6#
- 1...Rf6
- 2.Bxf6#
- 1...Sf5
- 2.Rxf5#
- 1...d5!
- threat
- 1.d8Q?
- 1...Rxg6
- 2.Sxg6#
- 1...Bg1
- 2.Bg3#
- 1...Rf6
- 2.Bxf6#
- 1...Rd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sd7#
- 2.Sf7#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...d5
- 2.Qaxd5#
- 2.Qdxd5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Rc7!
- 1...Rxg6
- 1.d8R?
- 1...Rxg6
- 2.Sxg6#
- 1...Rf6
- 2.Bxf6#
- 1...Rd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sd7#
- 2.Sf7#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Rc7!
- 1...Rxg6
- 1.Ke1?
- Keys
- 1.Rf8!
- 1...Rf6+
- 2.Bxf6#
- 1...Rf7+
- 2.Sxf7#
- 1...Rxg6
- 2.Sxg6#
- 1...Rxd7
- 2.Sxd7#
- 1...d5
- 2.Qxh2#
- 1...Bg1
- 2.Bg3#
- 1...Re8
- 2.Sf7#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Se8
- 2.Rf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Rf6+
- 1.Rf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD,P_PINR(C)::B(G),XR(e)
- R(e);XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- R(g);N_GUARD,P_PINR(C)::S(K),XR(g)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(e);XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- R(e);N_GUARD::B(G),XR(e)
- R(g);N_GUARD::S(K),XR(g)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD,P_PINR(C)::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- P(d);
- Try
- K(A);S_FLIGHT
- Vars
- R(e);XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- R(e);N_GUARD::B(G),XR(e)
- R(g);N_GUARD::S(K),XR(g)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- P(d);
- Try
- K(A);S_FLIGHT
- Vars
- R(e);P_PINP(F),XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- R(e);N_GUARD::B(G),XR(e)
- R(g);N_GUARD::S(K),XR(g)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- P(d);
- Try
- B(G);XR(g)
- Threat
- S(K)
- Vars
- R(e);N_GUARD,P_PINR(C)::B(G),XR(e)
- Refutation
- R(e);XB(G)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,N_GUARD::S(K),XR(g)
- Refutation
- R(e);CHECK
- Try
- R(C);
- Vars
- R(e);XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- P(d);SBLOCK::QAB(B),XB(a)
- R(e);N_GUARD,P_PINR(C)::B(G),XR(e)
- R(g);N_GUARD,P_PINR(C)::S(K),XR(g)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- P(b);XR(C)
- Try
- R(C);
- Vars
- R(e);CHECK,N_GUARD::B(G),XR(e)
- R(g);CHECK,XR(C)::S(K),XR(g)
- R(e);XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- P(d);SBLOCK::QAB(B),XB(a)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- R(g);
- Try
- Q(B);
- Vars
- R(e);XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- B(a);N_GUARD::B(G)
- R(e);N_GUARD,P_PINR(C)::B(G),XR(e)
- R(g);N_GUARD,P_PINR(C)::S(K),XR(g)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- P(d);
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- R(e);XP(H)::S(K),XR(e)
- R(e);N_GUARD,P_PINR(C)::B(G),XR(e)
- S(h);N_GUARD::R1(C),XS(h)
- Refutation
- P(d);
- Try
- P(I);
- Vars
- R(e);XP(H)::S(K),XR(e)
- B(a);N_GUARD::B(G)
- R(e);N_GUARD,P_PINR(C)::B(G),XR(e)
- R(g);N_GUARD::S(J),XR(g)
- R(g);N_GUARD,P_PINR(C)::S(K),XR(g)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- R(g);
- Try
- P(I);
- Vars
- R(e);XP(H)::S(K),XR(e)
- R(e);N_GUARD,P_PINR(C)::B(G),XR(e)
- R(g);N_GUARD::S(J),XR(g)
- R(g);N_GUARD,P_PINR(C)::S(K),XR(g)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
- Refutation
- R(g);
- Try
- Actual
- R(C);
- Vars
- R(e);CHECK,N_GUARD::B(G),XR(e)
- R(g);CHECK,N_GUARD::S(K),XR(g)
- R(e);XP(H)::S(K),XR(e)
- R(g);XP(I)::S(J),XR(g)
- P(d);SBLOCK::QAB(B),XB(a)
- B(a);N_GUARD::B(G)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::B(G),XB(a)
- B(a);OGATE::P(E),XB(a)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
- P(f);N_GUARD::S(J)
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).