MESON Chess Problem Database
Problem Display
PID: 27563 (3rk3/3pB2R/3P3N/4b3/K7/8/8/2Q5 w - - 0 1)
Lebeck, Donald
Mate in Two!! (Lebeck), 1992
#2
6 + 4
SOLUTION
- SOUND
- Sets
- 1...Rc8
- 2.Qxc8#
- 1...Bh2
- 2.Rh8#
- 1...Bg3
- 2.Rh8#
- 1...Bf4
- 2.Rh8#
- 1...Bh8
- 2.Rxh8#
- 1...Rc8
- Tries
- 1.Qg5?
- threat
- 2.Qh5#
- 2.Qg6#
- 2.Qg8#
- 1...Bg7
- 2.Qh5#
- 2.Qg6#
- 1...Ra8+!
- threat
- 1.Qg1?
- threat
- 2.Qg6#
- 2.Qg8#
- 1...Bg3
- 2.Rh8#
- 1...Bg7
- 2.Qg6#
- 1...Ra8+!
- threat
- 1.Qc4?
- threat
- 2.Qf7#
- 2.Qg8#
- 1...Bg7
- 2.Qf7#
- 1...Ra8+!
- threat
- 1.Qc7?
- threat
- 2.Qxd8#
- 1...Rb8
- 2.Qxb8#
- 1...Rc8
- 2.Qxc8#
- 1...Ra8+!
- threat
- 1.Qg5?
- Keys
- 1.Qh1!
- threat
- 2.Qh5#
- 1...Ra8+
- 2.Qxa8#
- 1...Bh2
- 2.Rh8#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(c);OGATEB::QAR2(A),XR(c)
- B(a);N_GUARD::R(F)
- B(a);N_GUARD::R(F),XB(a)
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- R(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(a);N_GUARD::R(F)
- B(a);::QAB(A)
- Refutation
- R(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(a);::QAB1(A)
- Refutation
- R(c);CHECK
- Try
- Q(A);
- Threat
- QAR1(A),XR(c)
- Vars
- R(c);OGATEB::QAR(A),XR(c)
- R(c);OGATEB::QAR2(A),XR(c)
- Refutation
- R(c);CHECK
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- R(c);CHECK,OGATEB::QAR(A),XR(c)
- B(a);N_GUARD::R(F)
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).