MESON Chess Problem Database
Problem Display
PID: 27418 (8/8/4B3/3R3p/K2QPr1k/8/7P/8 w - - 0 1)
Lebeck, Donald
Mate in Two!! (Lebeck), 1992
#2
6 + 3
SOLUTION
- SOUND
- Sets
- 1...Rf2
- 2.Qxf2#
- 1...Rxe4
- 2.Qxe4#
- 1...Rf6
- 2.Qxf6#
- 1...Rf2
- Tries
- 1.Qe3?
- threat
- 2.Qxf4#
- 2.Qg3#
- 2.Qh3#
- 1...Rxe4+
- 2.Qxe4#
- 1...Rf5
- 2.Qg3#
- 1...Rf1
- 2.Qg5#
- 2.Qg3#
- 2.Qh3#
- 1...Rf2
- 2.Qxf2#
- 2.Qg5#
- 2.Qg3#
- 2.Qh3#
- 1...Rf3
- 2.Qg5#
- 1...Rf6
- 2.Qg5#
- 2.Qg3#
- 2.Qh3#
- 1...Rf7
- 2.Qg5#
- 2.Qg3#
- 2.Qh3#
- 1...Rf8
- 2.Qg5#
- 2.Qg3#
- 2.Qh3#
- 1...Rg4!
- threat
- 1.Qe3?
- Keys
- 1.Qe5!
- threat
- 2.Qxf4#
- 2.Qg5#
- 2.Qxh5#
- 1...Rxe4+
- 2.Qxe4#
- 1...Rg4
- 2.Qxh5#
- 1...Rf5
- 2.Qg3#
- 1...Rf1
- 2.Qg3#
- 2.Qg5#
- 2.Qxh5#
- 1...Rf2
- 2.Qg3#
- 2.Qg5#
- 2.Qxh5#
- 1...Rf3
- 2.Qg5#
- 2.Qxh5#
- 1...Rf6
- 2.Qg3#
- 2.Qxf6#
- 2.Qg5#
- 2.Qxh5#
- 1...Rf7
- 2.Qg3#
- 2.Qg5#
- 2.Qxh5#
- 1...Rf8
- 2.Qg3#
- 2.Qg5#
- 2.Qxh5#
- threat
- 1.Qe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD::QAB(C),XR(a)
- R(a);OGATE,P_PINQ(C),P_SPINR(a),XP(D)::QAR(C),XR(a)
- Tries
- Try
- Q(C);P_SPINP(D)
- Threat
- DUALS(3)
- Vars
- R(a);CHECK,OGATE,XP(D)::QAR(C),XR(a)
- R(a);N_PINP(D)::QAB1(C)
- R(a);N_PINP(D),OGATE::QAB1(C)
- Refutation
- R(a);
- Try
- Actual
- Q(C);P_SPINP(D)
- Threat
- DUALS(3)
- Vars
- R(a);CHECK,OGATE,XP(D)::QAR(C),XR(a)
- R(a);::QAR1(C),XP(c)
- R(a);N_PINP(D),OGATE::QAB1(C)
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).