MESON Chess Problem Database
Problem Display
PID: 227000 (4K3/1Nb5/1p2k3/1P1pB3/p3n3/P2NR1P1/PQ6/5R2 w - - 0 1)
Conway-Poole, IM
Sunday Chronicle, 1946
(First published on Sun Jul 7 1946)
#2
11 + 6
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bxe5
- 2.Qxe5#
- 1...Bd6
- 2.Sd8#
- 1...Bb8
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Sd2
- 2.Rf6#
- 1...Sc3
- 2.Rf6#
- 1...Sxg3
- 2.Rf6#
- 1...Sc5
- 2.Rf6#
- 1...Sg5
- 2.Rf6#
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- Tries
- 1.Sdc5+?
- 1...Sxc5
- 2.Rf6#
- 1...bxc5!
- 1...Sxc5
- 1.Sbc5+?
- 1...Sxc5
- 2.Rf6#
- 1...bxc5!
- 1...Sxc5
- 1.Bd6?
- threat
- 2.Rf6#
- 2.Qe5#
- 2.Qf6#
- 1...Bxd6
- 2.Sd8#
- 2.Rf6#
- 2.Qf6#
- 1...Bd8
- 2.Qe5#
- 1...d4!
- threat
- 1.Bg7?
- threat
- 2.Rf6#
- 2.Qf6#
- 1...Bf4
- 2.Qf6#
- 1...Be5
- 2.Qxe5#
- 1...Bd8
- 2.Qe5#
- 1...d4!
- threat
- 1.Bh8?
- threat
- 2.Rf6#
- 2.Qf6#
- 1...Bf4
- 2.Qf6#
- 1...Be5
- 2.Qxe5#
- 1...Bd8
- 2.Qe5#
- 1...d4!
- threat
- 1.Rff3?
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qxe5#
- 1...Sxg3
- 2.Rf6#
- 1...Bd6
- 2.Sd8#
- 1...Bb8
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Sd2
- 2.Rf6#
- 1...Sf2
- 2.Rf6#
- 1...Sc3
- 2.Rf6#
- 1...Sc5
- 2.Rf6#
- 1...Sg5
- 2.Rf6#
- 1...d4!
- 1...Sd6+
- 1.Rf4?
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qxe5#
- 1...Sxg3
- 2.Rf6#
- 1...Bd6
- 2.Sd8#
- 1...Bb8
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Sd2
- 2.Rf6#
- 1...Sf2
- 2.Rf6#
- 1...Sc3
- 2.Rf6#
- 1...Sc5
- 2.Rf6#
- 1...Sg5
- 2.Rf6#
- 1...d4!
- 1...Sd6+
- 1.Rf7?
- threat
- 2.Sf4#
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qxe5#
- 1...d4!
- threat
- 1.Rf8?
- threat
- 2.Sf4#
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qxe5#
- 1...d4!
- threat
- 1.Qc1?
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qc8#
- 1...Sxg3
- 2.Rf6#
- 1...d4
- 2.Qc4#
- 1...Bd6
- 2.Sd8#
- 2.Qc8#
- 1...Bb8
- 2.Sd8#
- 2.Qc8#
- 1...Bd8
- 2.Sxd8#
- 2.Qc8#
- 1...Sd2
- 2.Rf6#
- 1...Sc3
- 2.Rf6#
- 1...Sc5
- 2.Rf6#
- 1...Sg5
- 2.Rf6#
- 1...Sf2!
- 1...Sd6+
- 1.Qc3?
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qxe5#
- 2.Qc8#
- 1...Sxc3
- 2.Rf6#
- 1...Sxg3
- 2.Rf6#
- 1...d4
- 2.Qc4#
- 1...Bd6
- 2.Sd8#
- 2.Qc8#
- 1...Bb8
- 2.Sd8#
- 2.Qc8#
- 1...Bd8
- 2.Sxd8#
- 2.Qc8#
- 1...Sd2
- 2.Rf6#
- 1...Sc5
- 2.Rf6#
- 1...Sg5
- 2.Rf6#
- 1...Sf2!
- 1...Sd6+
- 1.Qd4?
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qxe5#
- 1...Sxg3
- 2.Rf6#
- 1...Bd6
- 2.Sd8#
- 1...Bb8
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Sd2
- 2.Rf6#
- 2.Qg4#
- 1...Sc3
- 2.Rf6#
- 2.Qg4#
- 1...Sc5
- 2.Rf6#
- 2.Qg4#
- 1...Sg5
- 2.Rf6#
- 2.Qg4#
- 1...Sf2!
- 1...Sd6+
- 1.Qf2?
- threat
- 2.Qf5#
- 2.Qf7#
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Qxf6#
- 1...Sxg3
- 2.Qf6#
- 2.Qf7#
- 1...d4
- 2.Qf7#
- 1...Sg5
- 2.Qf5#
- 2.Qf6#
- 1...Sxf2!
- threat
- 1.Qb4?
- threat
- 2.Qe7#
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...d4
- 2.Qc4#
- 1...Bd6
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Sc5
- 2.Rf6#
- 2.Qg4#
- 1...Sf2!
- threat
- 1.g4?
- threat
- 2.Sf4#
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qxe5#
- 1...d4!
- threat
- 1.Sdc5+?
- Keys
- 1.Qc2!
- 1...Sd6+
- 2.Bxd6#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe5
- 2.Qc8#
- 1...Sxg3
- 2.Sf4#
- 2.Rf6#
- 1...Sf2
- 2.Sf4#
- 1...d4
- 2.Qc4#
- 1...Bd6
- 2.Sd8#
- 2.Qc8#
- 1...Bb8
- 2.Sd8#
- 2.Qc8#
- 1...Bd8
- 2.Sxd8#
- 2.Qc8#
- 1...Sd2
- 2.Sf4#
- 2.Rf6#
- 1...Sc3
- 2.Sf4#
- 2.Rf6#
- 1...Sc5
- 2.Sf4#
- 2.Rf6#
- 1...Sg5
- 2.Sf4#
- 2.Rf6#
- 1...Sd6+
- 1.Qc2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- B(f);OGATE,XB(I)::QAR1(C),XB(f)
- B(f);N_GUARD::S(J)
- B(f);N_GUARD::S(J),XB(f)
- S(b);N_GUARD::R1(A)
- S(b);N_GUARD,XP(G)::R1(A)
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- Tries
- Try
- S(E);CHECK
- Vars
- S(b);XS(E)::R1(A)
- Refutation
- P(d);XS(E)
- Try
- S(J);CHECK
- Vars
- S(b);XS(J)::R1(A)
- Refutation
- P(d);XS(J)
- Try
- B(I);P_PINS(b)
- Threat
- DUALS(3)
- Vars
- B(f);::QAR1(C)
- Refutation
- P(c);
- Try
- B(I);P_PINS(b)
- Threat
- DUALS(2)
- Vars
- B(f);::QAR1(C)
- B(f);N_GUARD,N_SPINS(b)::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- B(I);P_PINS(b)
- Threat
- DUALS(2)
- Vars
- B(f);::QAR1(C)
- B(f);N_GUARD,N_SPINS(b)::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- R(A);
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAR1(C),XB(f)
- S(b);N_GUARD,XP(G)::R1(A)
- B(f);N_GUARD::S(J)
- B(f);N_GUARD::S(J),XB(f)
- S(b);N_GUARD::R1(A)
- Refutation
- P(c);
- Try
- R(A);
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAR1(C),XB(f)
- S(b);N_GUARD,XP(G)::R1(A)
- B(f);N_GUARD::S(J)
- B(f);N_GUARD::S(J),XB(f)
- S(b);N_GUARD::R1(A)
- Refutation
- P(c);
- Try
- R(A);
- Threat
- S(E)
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAR1(C),XB(f)
- Refutation
- P(c);
- Try
- R(A);
- Threat
- S(E)
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAR1(C),XB(f)
- Refutation
- P(c);
- Try
- Q(C);
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAB(C)
- S(b);N_GUARD,XP(G)::R1(A)
- P(c);OGATEB::QAB(C)
- S(b);N_GUARD::R1(A)
- Refutation
- S(b);
- Try
- Q(C);
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- S(b);N_GUARD,XQ(C)::R1(A)
- S(b);N_GUARD,XP(G)::R1(A)
- P(c);OGATEB::QAB(C)
- S(b);N_GUARD::R1(A)
- Refutation
- S(b);
- Try
- Q(C);
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAR1(C),XB(f)
- S(b);N_GUARD,XP(G)::R1(A)
- B(f);N_GUARD::S(J)
- B(f);N_GUARD::S(J),XB(f)
- Refutation
- S(b);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::QAR1(C),XS(b)
- P(c);::QAB1(C)
- Refutation
- S(b);XQ(C)
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- P(c);OGATEB::QAB(C)
- B(f);N_GUARD::S(J)
- B(f);N_GUARD::S(J),XB(f)
- Refutation
- S(b);
- Try
- P(G);
- Threat
- S(E)
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAR1(C),XB(f)
- Refutation
- P(c);
- Try
- Actual
- Q(C);
- Vars
- S(b);CHECK,OGATEB::R(F)+B(I),XS(b)
- S(b);CHECK,N_GUARD::R1(A),XS(b)
- B(f);OGATE,XB(I)::QAB(C)
- S(b);::S(E)
- P(c);OGATEB::QAB(C)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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