MESON Chess Problem Database
Problem Display
PID: 249021 (Q7/8/2PN4/R1PrP2R/3k4/3P4/3K4/8 w - - 0 1)
Blikeng, Bjarne
Thema Danicum, 1985
#2
9 + 2
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Tries
- 1.Qa7?
- threat
- 2.Sb5#
- 2.Ra4#
- 1...Rxc5
- 2.Qxc5#
- 1...Rxd6
- 2.cxd6#
- 1...Rxe5!
- threat
- 1.Qg8?
- threat
- 2.Qg1#
- 2.Qg4#
- 1...Rxe5
- 2.Qc4#
- 1...Rxd6
- 2.Qc4#
- 1...Rxc5!
- threat
- 1.Qh8?
- threat
- 2.Sf5#
- 2.Rh4#
- 1...Rxe5
- 2.Qxe5#
- 1...Rxd6
- 2.exd6#
- 2.e6#
- 1...Rxc5!
- threat
- 1.c7?
- 1...Rxc5
- 2.Qe4#
- 1...Rxd6
- 2.Qe4#
- 1...Rxe5!
- 1...Rxc5
- 1.Qa7?
- Keys
- 1.Qd8!
- threat
- 2.Qh4#
- 1...Rxc5
- 2.Sb5#
- 1...Rxe5
- 2.Sf5#
- 1...Rxd6
- 2.Qxd6#
- threat
- 1.Qd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,P_SPINR(b),XP(D)::QAB1(I),XR(b)
- R(b);OGATE,XS(H)::QAB(I)+P(D),XR(b)
- Refutation
- R(b);XP(E)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XP(E)::QAR1(I)
- R(b);OGATE,XS(H)::QAR1(I)
- Refutation
- R(b);XP(D)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,P_SPINR(b),XP(E)::QAB1(I),XR(b)
- Refutation
- R(b);XP(D)
- Try
- P(G);
- Vars
- R(b);OGATE,XP(D)::QAR1(I)
- R(b);OGATE,XS(H)::QAR1(I)
- Refutation
- R(b);XP(E)
- Try
- Actual
- Q(I);
- Threat
- QAR(I)
- Vars
- R(b);SBLOCK,XP(D)::QAR(I)+S(H),DCHECK
- R(b);SBLOCK,XP(E)::QAR(I)+S(H),DCHECK
- R(b);OGATE,P_SPINR(b),XS(H)::QAR2(I),XR(b)
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).