MESON Chess Problem Database
Problem Display
PID: 237994 (2b1Qb2/1p1pnBp1/1P1P1NP1/2p1k1pP/2PR1RP1/3P1P2/4K3/4B3 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
64 Shakhmatnoe obozrenie, 1970
#2
15 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...gxf6
- 2.Rfe4#
- 1...gxf6
- Tries
- 1.Sh7?
- threat
- 2.Rfe4#
- 1...gxf4
- 2.Rd5#
- 1...cxd4!
- threat
- 1.Sg8?
- threat
- 2.Rfe4#
- 1...gxf4
- 2.Rd5#
- 1...cxd4!
- threat
- 1.Bc3?
- threat
- 2.Rf5#
- 1...gxf4
- 2.Rd5#
- 1...cxd4!
- threat
- 1.Bg3?
- threat
- 2.Rd5#
- 1...cxd4
- 2.Rf5#
- 1...gxf4!
- threat
- 1.Sh7?
- Keys
- 1.Se4!
- 1...Kxd4
- 2.Bc3#
- 1...Kxf4
- 2.Bg3#
- 1...cxd4
- 2.Rf5#
- 1...gxf4
- 2.Rd5#
- 1...Kxd4
- 1.Se4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- P(g);SBLOCK,XS(L)::R1(G)
- Tries
- Try
- S(L);
- Threat
- R1(G)
- Vars
- P(c);SBLOCK,XR(G)::R1(F)
- Refutation
- P(a);XR(F)
- Try
- S(L);
- Threat
- R1(G)
- Vars
- P(c);SBLOCK,XR(G)::R1(F)
- Refutation
- P(a);XR(F)
- Try
- B(A);
- Threat
- R1(G)
- Vars
- P(c);SBLOCK,XR(G)::B(A)+R(F),DCHECK
- Refutation
- P(a);P_SPINP(a),XR(F)
- Try
- B(A);
- Threat
- R1(F)
- Vars
- P(a);SBLOCK,XR(F)::B(A)+R(G),DCHECK
- Refutation
- P(c);P_SPINP(c),XR(G)
- Try
- Actual
- S(L);
- Vars
- K(b);N_SPINS(f),OGATEB,S_FLIGHT,XR(F)::B(A)
- K(b);N_SPINS(f),OGATEB,S_FLIGHT,XR(G)::B(A)
- P(a);SBLOCK,XR(F)::R1(G)
- P(c);SBLOCK,XR(G)::R1(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).