MESON Chess Problem Database
Problem Display
PID: 102701 (2Rrk3/3bp1K1/2R5/2Q3p1/8/8/8/8 w - - 0 1)
Pradignat, Emile Leonard
ABC des Echecs, 1894
#2
4 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxc6
- 2.Qxc6#
- 1...g4
- 2.Qh5#
- 1...e5
- 2.Qf8#
- 1...e6
- 2.Qf8#
- 1...Bxc6
- Tries
- 1.Re6?
- threat
- 2.Rxe7#
- 2.Qxe7#
- 1...Rxc8
- 2.Qxe7#
- 1...Bxe6!
- threat
- 1.R6c7?
- 1...Bxc8
- 2.Rxe7#
- 2.Qxe7#
- 1...Bh3
- 2.Rxe7#
- 2.Qxe7#
- 1...Ba4
- 2.Rxe7#
- 2.Qxe7#
- 1...Bg4
- 2.Rxe7#
- 2.Qxe7#
- 1...Bb5
- 2.Rxe7#
- 2.Qxe7#
- 2.Qxb5#
- 1...Bf5
- 2.Rxe7#
- 2.Qxe7#
- 1...Bc6
- 2.Rxe7#
- 2.Qxe7#
- 2.Qxc6#
- 1...Be6
- 2.Rxe7#
- 2.Qxe7#
- 1...g4
- 2.Qh5#
- 1...e5
- 2.Qf8#
- 1...e6
- 2.Qf8#
- 1...Rxc8!
- 1...Bxc8
- 1.Re6?
- Keys
- 1.Qb5!
- 1...Rxc8
- 2.Rxc8#
- 1...Bxc6
- 2.Qxc6#
- 1...Bxc8
- 2.Rxc8#
- 1...Bh3
- 2.Re6#
- 1...Bg4
- 2.Re6#
- 1...Bf5
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...e5
- 2.Re6#
- 1...e6
- 2.Rxe6#
- 1...g4
- 2.Qh5#
- 1...Rxc8
- 1.Qb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- B(b);OGATE,XR(B)::QAB(A),XB(b)
- P(a);OGATE::QAB(A)
- P(c);OGATE::QAR1(A)
- Tries
- Try
- R(B);P_PINP(c)
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINR(d),XR(D)::QAR1(A),XP(c)
- Refutation
- B(b);N_SPINP(c),XR(B)
- Try
- R(B);
- Vars
- P(a);OGATE::QAB(A)
- P(c);OGATE::QAR1(A)
- Refutation
- R(d);N_SPINR(d),XR(D)
- Try
- Actual
- Q(A);
- Vars
- R(d);N_SPINR(d),OGATE,XR(D)::R(B),XR(d)
- B(b);OGATE,P_SPINB(b),XR(B)::QAB(A),XB(b)
- B(b);N_SPINR(d),OGATE,XR(D)::QAB(A)+R(B),XB(b)
- B(b);OGATEB::QAB(A)+R(B)
- B(b);OGATEB::QAB(A)+R(B),XB(b)
- P(c);OGATEB::R(B)
- P(c);OGATEB::R(B),XP(c)
- P(a);OGATE::QAB(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).