MESON Chess Problem Database
Problem Display
PID: 49147 (1B1NBR2/6Pq/5P1P/5k2/r7/3p4/P2Q1NP1/6K1 w - - 0 1)
Anonymous
L'Echiquier Francais, 1907
#2
12 + 4
| 204 | Op de Hoogte | 1907 |
SOLUTION
- SOUND
- Sets
- 1...Qg6
- 2.Bd7#
- 1...Qxg7
- 2.fxg7#
- 1...Rxa2
- 2.Qf4#
- 2.g4#
- 1...Ra3
- 2.Qf4#
- 2.g4#
- 1...Rf4
- 2.Qxf4#
- 2.Qa5#
- 1...Rg4
- 2.Qa5#
- 1...Rh4
- 2.Qa5#
- 1...Ra5
- 2.Qf4#
- 2.Qxa5#
- 2.g4#
- 1...Ra6
- 2.Qf4#
- 2.g4#
- 1...Ra7
- 2.Qf4#
- 2.g4#
- 1...Ra8
- 2.Qf4#
- 2.g4#
- 1...Qg6
- Tries
- 1.Qe3?
- threat
- 2.Qc5#
- 2.Qe5#
- 1...Qg8
- 2.Qe5#
- 1...Rc4
- 2.Qe5#
- 1...Rd4
- 2.Qe5#
- 1...Ra5
- 2.Qf4#
- 2.g4#
- 1...Re4!
- threat
- 1.Qe2?
- threat
- 2.Qh5#
- 2.Qe5#
- 1...Kg5
- 2.Qh5#
- 1...Qxh6
- 2.Qe5#
- 1...Qxg7
- 2.Qe5#
- 1...Qg6
- 2.Qe5#
- 1...Re4
- 2.Qh5#
- 1...Rg4
- 2.Qxg4#
- 2.Qe5#
- 1...Rh4
- 2.Qe5#
- 1...Ra5
- 2.Qg4#
- 2.Qh5#
- 1...dxe2!
- threat
- 1.g8Q?
- threat
- 2.Qdg5#
- 2.Qd5#
- 2.Qe6#
- 2.Qxh7#
- 2.Qgg5#
- 1...Qxh6
- 2.Bd7#
- 2.Qd5#
- 2.Qe6#
- 1...Qc7
- 2.Qdg5#
- 2.Qe6#
- 2.Qgg5#
- 1...Qf7
- 2.Qdg5#
- 2.Qgg5#
- 1...Qg6
- 2.Bxg6#
- 2.Bd7#
- 2.Qd5#
- 2.Qe6#
- 2.Qxg6#
- 1...Qa7
- 2.Bg6#
- 2.Qdg5#
- 2.Qd5#
- 2.Qe6#
- 2.Qgg5#
- 2.Qg6#
- 1...Qb7
- 2.Bg6#
- 2.Qdg5#
- 2.Qe6#
- 2.Qgg5#
- 2.Qg6#
- 1...Qd7
- 2.Bg6#
- 2.Bxd7#
- 2.Qdg5#
- 2.Qgg5#
- 2.Qg6#
- 1...Qe7
- 2.Bg6#
- 2.Qdg5#
- 2.Qgg5#
- 2.Qg6#
- 2.fxe7#
- 1...Qg7
- 2.Qd5#
- 2.Qe6#
- 2.fxg7#
- 1...Qh8
- 2.Bg6#
- 2.Bd7#
- 2.Qdg5#
- 2.Qd5#
- 2.Qe6#
- 2.Qgg5#
- 2.Qg6#
- 1...Rd4
- 2.Qdg5#
- 2.Qe6#
- 2.Qxh7#
- 2.Qgg5#
- 1...Re4
- 2.Qdg5#
- 2.Qxh7#
- 2.Qgg5#
- 1...Rf4
- 2.Qxf4#
- 2.Qa5#
- 2.Qd5#
- 1...Rg4
- 2.Qa5#
- 2.Qd5#
- 2.Qe6#
- 2.Qxg4#
- 1...Ra5
- 2.Qf4#
- 2.Qxa5#
- 2.Qdg5#
- 2.Qe6#
- 2.Qxh7#
- 2.Qxd3#
- 2.Qg4#
- 2.Qgg5#
- 2.g4#
- 1...Ra6
- 2.Qf4#
- 2.Qdg5#
- 2.Qd5#
- 2.Qxh7#
- 2.Qxd3#
- 2.Qg4#
- 2.Qgg5#
- 2.g4#
- 1...Ra7
- 2.Qf4#
- 2.Qdg5#
- 2.Qd5#
- 2.Qe6#
- 2.Qxd3#
- 2.Qg4#
- 2.Qgg5#
- 2.g4#
- 1...Qxg8!
- threat
- 1.g8R?
- threat
- 2.Rg5#
- 2.Qg5#
- 1...Qxh6
- 2.Bd7#
- 1...Qf7
- 2.Qg5#
- 1...Qg6
- 2.Bxg6#
- 2.Bd7#
- 1...Qg7
- 2.fxg7#
- 1...Rf4
- 2.Qxf4#
- 2.Qa5#
- 1...Rg4
- 2.Qa5#
- 1...Qxg8!
- threat
- 1.Qe3?
- Keys
- 1.Bf4!
- threat
- 2.g4#
- 1...Qxg7
- 2.fxg7#
- 1...Rxf4
- 2.Qa5#
- 1...Qg6
- 2.Bd7#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(d);P_PINP(E),SBLOCK::B(K)
- Q(d);OGATE,P_PINP(E),XP(H)::R(L)+P(F),XQ(d)
- R(b);N_GUARD,P_PINP(E)::QAR(C)
- R(b);N_GUARD::QAR(C)
- Tries
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(d);::QAR1(C)
- R(b);::QAR1(C)
- Refutation
- R(b);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- K(c);P-FLIGHT::QAR1(C)
- Q(d);XP(G)::QAR1(C)
- Q(d);P_PINP(E),XP(H)::QAR1(C)
- Q(d);P_PINP(E)::QAR1(C)
- R(b);::QAR2(C)
- R(b);::QAR1(C)
- Refutation
- P(a);XQ(C)
- Try
- P(H);
- Threat
- DUALS(5)
- Refutation
- Q(d);P_PINP(E),XQ(H)
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XP(G)::B(K)
- Q(d);::QAR1(C)
- Q(d);OGATE,P_PINP(E)::R(L)+P(F),XQ(d)
- R(b);N_GUARD,P_PINP(E)::QAR(C)
- Refutation
- Q(d);P_PINP(E),XR(H)
- Try
- Actual
- B(I);
- Threat
- P(E)
- Vars
- Q(d);OGATE,P_PINP(E),XP(H)::R(L)+P(F),XQ(d)
- R(b);N_GUARD,SBLOCK,XB(I)::QAR(C)
- Q(d);P_PINP(E),SBLOCK::B(K)
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).