MESON Chess Problem Database
Problem Display
PID: 9326 (4RN1n/1Nb2pB1/P2P4/r4kpp/R7/8/p4p1K/rbQ5 w - - 0 1)
David, Maxime
La Strategie, 1880
#2
9 + 11
| 3348 | Changing Fashions | 1925 |
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Qxc5#
- 1...Re5
- 2.Rxe5#
- 1...Rxa6
- 2.Re5#
- 2.Qc5#
- 1...Bc2
- 2.Qxc2#
- 1...Bb6
- 2.Qc8#
- 1...Bxd6+
- 2.Sxd6#
- 1...Bb8
- 2.Qc8#
- 1...Bd8
- 2.Qc8#
- 1...f1Q
- 2.Qxf1#
- 1...f1S+
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...g4
- 2.Qf4#
- 1...Rc5
- Tries
- 1.dxc7?
- threat
- 2.Sd6#
- 2.c8Q#
- 2.c8B#
- 1...f1S+
- 2.Qxf1#
- 1...Rxa4
- 2.c8Q#
- 2.c8B#
- 1...Rxa6
- 2.Re5#
- 2.Qc5#
- 1...Be4
- 2.c8Q#
- 2.c8B#
- 1...f1Q
- 2.Sd6#
- 2.Qxf1#
- 2.c8Q#
- 2.c8B#
- 1...f1B
- 2.Sd6#
- 2.Qxf1#
- 2.c8Q#
- 2.c8B#
- 1...f1R
- 2.Sd6#
- 2.Qxf1#
- 2.c8Q#
- 2.c8B#
- 1...Rb5
- 2.Sd6#
- 2.c8Q#
- 2.c8B#
- 1...Rc5
- 2.Sd6#
- 2.Qxc5#
- 1...Re5
- 2.Sd6#
- 2.Rxe5#
- 1...Bc2
- 2.Sd6#
- 2.Qxc2#
- 2.c8Q#
- 2.c8B#
- 1...Bd3
- 2.Sd6#
- 2.c8Q#
- 2.c8B#
- 1...Sg6
- 2.Sd6#
- 2.c8Q#
- 2.c8B#
- 1...g4
- 2.Sd6#
- 2.Rxa5#
- 2.Qf4#
- 2.c8Q#
- 2.c8B#
- 1...h4
- 2.Sd6#
- 2.c8Q#
- 2.c8B#
- 1...f6
- 2.Sd6#
- 2.c8Q#
- 2.c8B#
- 1...Rd5!
- threat
- 1.dxc7?
- Keys
- 1.Qc4!
- 1...Bxd6+
- 2.Sxd6#
- 1...f1S+
- 2.Qxf1#
- 1...Rxa4
- 2.Re5#
- 1...Rxa6
- 2.Re5#
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Be4
- 2.Qxe4#
- 1...g4
- 2.Qf4#
- 1...f1Q
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Rb5
- 2.Qxb5#
- 1...Rc5
- 2.Qxc5#
- 1...Rd5
- 2.Qxd5#
- 1...Re5
- 2.Rxe5#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.Qxd3#
- 1...Bb6
- 2.Qc8#
- 1...Bb8
- 2.Rxa5#
- 2.Qc8#
- 1...Bd8
- 2.Qc8#
- 1...Sg6
- 2.Qxf7#
- 1...h4
- 2.Qg4#
- 1...f6
- 2.Qe6#
- 1...Bxd6+
- 1.Qc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- R(e);N_GUARD::QAR(A),XR(e)
- R(e);N_GUARD,N_PINP(E)::R1(H),XR(e)
- B(b);N_GUARD::QAB(A),XB(b)
- B(i);N_PINP(E),OGATE::QAB(A)
- B(i);CHECK,XP(E)::S(F),XB(i)
- B(i);OGATE::QAB(A)
- P(d);OGATEB::QAR(A),XQ(d)
- P(d);CHECK,OGATEB::QAR(A),XS(d)
- P(d);OGATEB::QAR(A),XB(d)
- P(d);OGATEB::QAR(A),XR(d)
- P(g);N_GUARD::QAR1(A)
- Tries
- Try
- P(E);N_SPINP(E),XB(i)
- Threat
- DUALS(3)
- Vars
- P(d);CHECK,OGATEB::QAR(A),XS(d)
- R(e);XR(C)::P=Q
- B(b);::P=Q
- Refutation
- R(e);
- Try
- Actual
- Q(A);
- Vars
- B(i);CHECK,XP(E)::S(F),XB(i)
- P(d);CHECK,OGATEB::QAR(A),XS(d)
- R(e);N_GUARD,XR(C)::R1(H)
- B(b);N_GUARD::QAB1(A),XB(b)
- P(g);N_GUARD::QAR1(A)
- P(d);OGATEB::QAR(A),XQ(d)
- P(d);OGATEB::QAR(A),XB(d)
- P(d);OGATEB::QAR(A),XR(d)
- R(e);N_GUARD::QAR(A),XR(e)
- R(e);N_GUARD::QAR2(A),XR(e)
- R(e);N_GUARD,N_PINP(E)::R1(H),XR(e)
- B(b);N_GUARD::QAB(A),XB(b)
- B(i);N_PINP(E),OGATE::QAB(A)
- S(k);N_GUARD::QAR2(A),XP(j)
- P(h);N_GUARD::QAB1(A)
- P(j);N_GUARD::QAB1(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).