MESON Chess Problem Database
Problem Display
PID: 186753 (7K/8/7Q/6PB/R5Pr/rP5k/2R4P/8 w - - 0 1)
Degener, Udo
Troll, 2018
#2
9 + 3
SOLUTION
- SOUND
- Sets
- 1...Rxg4
- 2.Bxg4#
- 1...Rxh5
- 2.Qxh5#
- 1...Rxg4
- Tries
- 1.Rxa3?
- threat
- 2.b4#
- 1...Rxh5
- 2.Qxh5#
- 1...Rxg4!
- threat
- 1.Qh7?
- threat
- 2.Qd3#
- 1...Rxg4
- 2.Bxg4#
- 1...Rxh5
- 2.Qxh5#
- 1...Rxb3!
- threat
- 1.g6?
- threat
- 2.Qe3#
- 1...Rxg4
- 2.Bxg4#
- 1...Rxh5
- 2.Qxh5#
- 1...Rxb3!
- threat
- 1.Rxa3?
- Keys
- 1.Qe6!
- threat
- 2.Qe3#
- 1...Rxh5+
- 2.gxh5#
- 1...Rxb3
- 2.Qxb3#
- 1...Rxg4
- 2.Qxg4#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);OGATE,XP(E)::QAR(H)+B(G),DCHECK,XR(c)
- R(c);OGATE,P_PINQ(H),P_SPINR(c),XB(G)::QAR2(H),XR(c)
- Tries
- Try
- R(D);XR(a)
- Threat
- R(D)+P(C)
- Vars
- R(c);OGATE,P_PINQ(H),P_SPINR(c),XB(G)::QAR2(H),XR(c)
- Refutation
- R(c);XP(E)
- Try
- Q(H);
- Threat
- QAR(H)
- Vars
- R(c);OGATE,XP(E)::QAR(H)+B(G),DCHECK,XR(c)
- R(c);OGATE,P_PINQ(H),P_SPINR(c),XB(G)::QAR2(H),XR(c)
- Refutation
- R(a);XP(C)
- Try
- P(F);
- Threat
- QAR(H)
- Vars
- R(c);OGATE,XP(E)::QAR(H)+B(G),DCHECK,XR(c)
- R(c);OGATE,P_PINQ(H),P_SPINR(c),XB(G)::QAR2(H),XR(c)
- Refutation
- R(a);XP(C)
- Try
- Actual
- Q(H);P_SPINB(G)
- Threat
- QAR(H)
- Vars
- R(c);CHECK,OGATE,XB(G)::QAB(H)+P(E),XR(c)
- R(a);OGATE,XP(C)::QAR(H),XR(a)
- R(c);N_PINB(G),OGATE,P_SPINR(c),XP(E)::QAB1(H),XR(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).