MESON Chess Problem Database
Problem Display
PID: 12127 (3B4/3p3n/2pk4/R5p1/2p5/K4QP1/3p4/4R3 w - - 0 1)
Doukhan, Gerard
Europe Echecs, 1975
#2
6 + 7
| 5395 | Schach fur Nussknacker | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qxf8#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...c3
- 2.Qd3#
- 1...g4
- 2.Qf4#
- 1...c5
- 2.Ra6#
- 1...Sf6
- Tries
- 1.Re3?
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qxf8#
- 1...g4
- 2.Qf4#
- 1...c5
- 2.Ra6#
- 1...c3!
- 1...d1Q
- 1.Re4?
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...g4
- 2.Qf4#
- 1...c5!
- 1...d1Q
- 1.Ree5?
- 1...c5
- 2.Qd5#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...g4!
- 1...c5
- 1.Re7?
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf6
- 2.Qxf6#
- 1...c3
- 2.Qd3#
- 1...g4
- 2.Qf4#
- 1...c5
- 2.Ra6#
- 1...Sf8!
- 1...d1Q
- 1.Re3?
- Keys
- 1.Re8!
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...g4
- 2.Qf4#
- 1...c5
- 2.Ra6#
- 1...d1Q
- 1.Re8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(g);N_GUARD::QAR2(C),XS(g)
- S(g);N_GUARD::QAB(C),XS(g)
- P(a);OGATEB::QAR(C),XQ(a)
- P(a);OGATEB::QAR(C),XS(a)
- P(a);OGATEB::QAR(C),XB(a)
- P(a);OGATEB::QAR(C),XR(a)
- P(b);N_GUARD::QAR(C)
- P(c);N_GUARD::QAB(C)
- P(d);OGATEB,SBLOCK::R(E)
- Tries
- Try
- R(A);
- Vars
- P(a);OGATEB::QAR(C),XQ(a)
- P(a);OGATEB::QAR(C),XS(a)
- P(a);OGATEB::QAR(C),XB(a)
- P(a);OGATEB::QAR(C),XR(a)
- S(g);N_GUARD::QAR2(C),XS(g)
- S(g);N_GUARD::QAB(C),XS(g)
- P(c);N_GUARD::QAB(C)
- P(d);OGATEB,SBLOCK::R(E)
- Refutation
- P(b);
- Try
- R(A);
- Vars
- P(a);OGATEB::QAR(C),XQ(a)
- P(a);OGATEB::QAR(C),XS(a)
- P(a);OGATEB::QAR(C),XB(a)
- P(a);OGATEB::QAR(C),XR(a)
- S(g);N_GUARD::QAR2(C),XS(g)
- S(g);N_GUARD::QAB(C),XS(g)
- P(b);N_GUARD::QAR(C)
- P(c);N_GUARD::QAB(C)
- Refutation
- P(d);
- Try
- R(A);
- Vars
- P(d);N_GUARD::QAR1(C)
- P(a);OGATEB::QAR(C),XQ(a)
- P(a);OGATEB::QAR(C),XS(a)
- P(a);OGATEB::QAR(C),XB(a)
- P(a);OGATEB::QAR(C),XR(a)
- S(g);N_GUARD::QAR2(C),XS(g)
- S(g);N_GUARD::QAB(C),XS(g)
- P(b);N_GUARD::QAR(C)
- Refutation
- P(c);
- Try
- R(A);
- Vars
- P(a);OGATEB::QAR(C),XQ(a)
- P(a);OGATEB::QAR(C),XS(a)
- P(a);OGATEB::QAR(C),XB(a)
- P(a);OGATEB::QAR(C),XR(a)
- S(g);N_GUARD::QAR2(C),XS(g)
- P(b);N_GUARD::QAR(C)
- P(c);N_GUARD::QAB(C)
- P(d);OGATEB,SBLOCK::R(E)
- Refutation
- S(g);
- Try
- Actual
- R(A);
- Vars
- P(a);OGATEB::QAR(C),XQ(a)
- P(a);OGATEB::QAR(C),XS(a)
- P(a);OGATEB::QAR(C),XB(a)
- P(a);OGATEB::QAR(C),XR(a)
- S(g);N_GUARD::QAR2(C),XS(g)
- S(g);N_GUARD::QAB(C),XS(g)
- P(b);N_GUARD::QAR(C)
- P(c);N_GUARD::QAB(C)
- P(d);OGATEB,SBLOCK::R(E)
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).