MESON Chess Problem Database
Problem Display
PID: 140707 (k7/1pPNPP1p/1r6/2B4b/P2Q2pq/1P4b1/5P1P/R2K4 w - - 0 1)
Sallay, Bela Albert
Comm., BCF 139. Ty., 1976-1977
#2
12 + 8
| 56 | The Problemist | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rxb3
- 2.Qh8#
- 1...Rb4
- 2.Qh8#
- 1...Rb5
- 2.Qh8#
- 2.axb5#
- 1...Ra6
- 2.Qh8#
- 1...Rc6
- 2.Qh8#
- 1...Rd6
- 2.c8Q#
- 2.c8R#
- 1...Re6
- 2.Qh8#
- 1...Rf6
- 2.e8Q#
- 2.e8R#
- 1...Rg6
- 2.f8Q#
- 2.f8R#
- 1...Rh6
- 2.Qh8#
- 1...Rxb3
- Tries
- 1.c8Q+?
- 1...Bb8
- 2.Qxb8#
- 1...Ka7!
- 1...Bb8
- 1.c8Q+?
- Keys
- 1.a5!
- threat
- 2.axb6#
- 1...Ka7
- 2.axb6#
- 1...Rxb3
- 2.Qh8#
- 1...Rb4
- 2.Qh8#
- 1...Rb5
- 2.Qh8#
- 1...Ra6
- 2.Qh8#
- 1...Rc6
- 2.Qh8#
- 1...Rd6
- 2.c8Q#
- 2.c8R#
- 1...Re6
- 2.Qh8#
- 1...Rf6
- 2.e8Q#
- 2.e8R#
- 1...Rg6
- 2.f8Q#
- 2.f8R#
- 1...Rh6
- 2.Qh8#
- threat
- 1.a5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(e);XP(E)::QAB1(G)
- R(e);::QAB1(G)
- R(e);P_PINQ(G),S_CUTB(a)::P=Q
- R(e);S_CUTQ(c)::P=Q
- R(e);S_CUTB(d)::P=Q
- R(e);SBLOCK::QAB1(G)
- Tries
- Try
- P(I);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR1(I),XB(a)
- Refutation
- K(h);P-FLIGHT,P_SPINR(e)
- Try
- Actual
- P(F);
- Threat
- R(A)+P(F),XR(e)
- Vars
- K(h);P-FLIGHT,P_SPINR(e)::R(A)+P(F)DCHECK,XR(e)
- R(e);XP(E)::QAB1(G)
- R(e);::QAB1(G)
- R(e);P_PINQ(G),S_CUTB(a)::P=Q
- R(e);S_CUTQ(c)::P=Q
- R(e);S_CUTB(d)::P=Q
- R(e);SBLOCK::QAB1(G)
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).