MESON Chess Problem Database
Problem Display
PID: 180423 (nBN2N2/2q2r1p/8/1Q1bk1P1/6P1/2RBP3/2K2p2/8 w - - 0 1)
Lider, Valentin Viktorovich
Bulletin of the Central Chess Club of USSR, 1974
#2
10 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Bxd6#
- 1...Qd6
- Tries
- 1.Rc4?
- threat
- 2.Qb2#
- 1...Qxb8
- 2.Re4#
- 1...Rf4
- 2.exf4#
- 1...Rxf8!
- threat
- 1.Rc5?
- threat
- 2.Qb2#
- 1...Qxb8
- 2.Rxd5#
- 1...Rf4
- 2.Qe8#
- 1...Rxf8!
- threat
- 1.Rxc7?
- threat
- 2.Re7#
- 2.Qb2#
- 1...Rxf8
- 2.Re7#
- 1...Sxc7
- 2.Qb2#
- 1...Rd7
- 2.Qb2#
- 1...Rf4
- 2.Re7#
- 1...Re7
- 2.Rxe7#
- 2.Qb2#
- 1...Rxc7+!
- threat
- 1.Qe8+?
- 1...Be6
- 2.Rc5#
- 2.Qxe6#
- 1...Re7!
- 1...Be6
- 1.Rc4?
- Keys
- 1.Rc6!
- threat
- 2.Qb2#
- 1...Qxb8
- 2.Re6#
- 1...Rf4
- 2.Sd7#
- threat
- 1.Rc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(d);N_PINR(B),OGATE::B(H),XQ(d)
- Tries
- Try
- R(B);
- Threat
- QAB(F)
- Vars
- Q(d);N_PINR(B),N_SPINQ(d),XB(H)::R1(B)
- R(e);OGATE::P(D),XR(e)
- Refutation
- R(e);XS(J)
- Try
- R(B);
- Threat
- QAB(F)
- Vars
- Q(d);N_PINR(B),N_SPINQ(d),XB(H)::R1(B),XB(b)
- R(e);N_GUARD::QAR(F)
- Refutation
- R(e);XS(J)
- Try
- R(B);N_SPINR(B),XQ(d)
- Threat
- DUALS(2)
- Vars
- R(e);XS(J)::B(H)+R(B),DCHECK
- S(g);P_SPINS(g),XR(B)::QAB(F)
- R(e);::QAB(F)
- R(e);::B(H)+R(B),DCHECK
- Refutation
- R(e);CHECK,P_SPINR(e),XR(B)
- Try
- Q(F);CHECK,N_PINB(b)
- Refutation
- R(e);P_SPINR(e)
- Try
- Actual
- R(B);
- Threat
- QAB(F)
- Vars
- Q(d);N_PINR(B),N_SPINQ(d),XB(H)::R1(B)
- R(e);N_GUARD::S(J)
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).