MESON Chess Problem Database
Problem Display
PID: 230685 (8/1Bp2K2/2p2Rp1/2rkppP1/n1N1R3/4BP1Q/2P4P/3N4 w - - 0 1)
Conway-Poole, IM
Sunday Chronicle, 1948
(First published on Sun Aug 1 1948)
#2
12 + 8
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...fxe4
- 2.Qe6#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Ra5
- Tries
- 1.Kxg6?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Ke7?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Kg7?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Ke8?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Kf8?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Kg8?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Bg1?
- threat
- 2.Sde3#
- 2.Sce3#
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- threat
- 1.Bf2?
- threat
- 2.Sde3#
- 2.Sce3#
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- threat
- 1.Ba6?
- threat
- 2.Rxe5#
- 1...Rxc4
- 2.Bxc4#
- 1...fxe4
- 2.Qe6#
- 2.Qd7#
- 1...Rb5!
- threat
- 1.Ba8?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Re6?
- threat
- 2.R6xe5#
- 1...Rxc4
- 2.R4xe5#
- 1...fxe4!
- threat
- 1.Rxg6?
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...f4
- 2.Qe6#
- 2.Qd7#
- 1...Rxc4!
- 1...fxe4
- 1.Qf1?
- threat
- 2.Rxe5#
- 2.Qd3#
- 1...Rxc4
- 2.Qxc4#
- 1...Sb2
- 2.Sc3#
- 2.Rxe5#
- 1...fxe4!
- threat
- 1.Qxf5?
- threat
- 2.Rd4#
- 2.Qe6#
- 2.Qd7#
- 2.Qxe5#
- 1...Rxc4
- 2.Rxe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qxe5#
- 1...Ra5
- 2.Bxc6#
- 2.Qe6#
- 2.Qd7#
- 2.Qxe5#
- 1...Rb5
- 2.Bxc6#
- 2.Qe6#
- 2.Qd7#
- 2.Qxe5#
- 1...Sb6
- 2.Sc3#
- 2.Rd4#
- 2.Qe6#
- 2.Qxe5#
- 1...gxf5!
- threat
- 1.Qh8?
- threat
- 2.Qd8#
- 1...Sb6
- 2.Sc3#
- 1...fxe4!
- threat
- 1.Kxg6?
- Keys
- 1.f4!
- 1...Kxe4
- 2.Qg2#
- 1...Rxc4
- 2.Rxe5#
- 1...exf4
- 2.Rd4#
- 1...fxe4
- 2.Qe6#
- 1...Ra5
- 2.Bxc6#
- 1...Rb5
- 2.Bxc6#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb6
- 2.Sc3#
- 1...Kxe4
- 1.f4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(e);OGATE,XR(H)::QAB1(F)
- Tries
- Try
- K(L);S_FLIGHT,XP(g)
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- K(L);P-FLIGHT
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- K(L);P-FLIGHT
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- K(L);S_FLIGHT
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- K(L);P-FLIGHT
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- K(L);S_FLIGHT
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- Refutation
- R(b);XS(G)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- Refutation
- R(b);XS(G)
- Try
- B(K);N_PINP(f)
- Threat
- R1(H),XP(d)
- Vars
- R(b);OGATE,XS(G)::B(K),XR(b)
- Refutation
- R(b);
- Try
- B(K);
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- R(J);
- Threat
- R1(J),XP(d)
- Vars
- R(b);SBLOCK,XS(G)::R1(H),XP(d)
- Refutation
- P(e);XR(H)
- Try
- R(J);XP(g)
- Vars
- P(e);OGATE,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(b);XS(G)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XS(G)::QAB1(F),XR(b)
- Refutation
- P(e);XR(H)
- Try
- Q(F);N_PINP(f),P_PINP(d),XP(e)
- Threat
- DUALS(4)
- Refutation
- P(g);N_SPINP(d),P_SPINP(f),XQ(F)
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- S(a);N_GUARD::S(A)
- Refutation
- P(e);XR(H)
- Try
- Actual
- P(E);
- Vars
- K(c);OGATEB,S_FLIGHT,XR(H)::QAB(F)
- R(b);SBLOCK,XS(G)::R1(H),XP(d)
- P(d);N_GUARD,XP(E)::R1(H)
- P(e);OGATE,SBLOCK,XR(H)::QAB1(F)
- R(b);N_GUARD::B(K),XP(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(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).