MESON Chess Problem Database
Problem Display
PID: 237770 (b3R3/2p2K2/1qp2p2/Np1kPp2/3b4/1P4N1/3R1P1B/2Q5 w - - 0 1)
Erokhin, Vladimir Alekseevich
Shakhmaty v SSSR, 1986
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Qh1#
- 1...b4
- 2.Qc4#
- 1...c5
- 2.Qh1#
- 1...fxe5
- 2.Rd8#
- 1...Qc5
- Tries
- 1.Sh5?
- threat
- 2.Sxf6#
- 1...Ke4
- 2.Qh1#
- 1...c5
- 2.Qh1#
- 1...fxe5!
- threat
- 1.f4?
- threat
- 2.Rd8#
- 1...Qc5
- 2.Qh1#
- 1...c5
- 2.Qh1#
- 1...Qb8!
- threat
- 1.b4?
- threat
- 2.Qh1#
- 1...Qxa5
- 2.Qc5#
- 1...fxe5
- 2.Rd8#
- 1...f4!
- threat
- 1.Sh5?
- Keys
- 1.Se4!
- threat
- 2.Sxf6#
- 1...Kxe4
- 2.Qh1#
- 1...fxe4
- 2.Rd8#
- 1...fxe5
- 2.Rxe5#
- 1...c5
- 2.Sc3#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(e);SBLOCK::QAB(A)
- P(b);N_GUARD::QAB1(A)
- P(f);SBLOCK::QAB(A)
- P(g);SBLOCK,XP(H)::R(J)
- Tries
- Try
- S(F);
- Threat
- S(F),XP(g)
- Vars
- K(c);N_SPINB(a),S_FLIGHT::QAB(A)
- P(f);SBLOCK::QAB(A)
- Refutation
- P(g);XP(H)
- Try
- P(C);
- Threat
- R(J)
- Vars
- Q(e);SBLOCK::QAB(A)
- P(f);SBLOCK::QAB(A)
- Refutation
- Q(e);
- Try
- P(E);
- Threat
- QAB(A)
- Vars
- Q(e);N_GUARD,XS(G)::QAR1(A)
- P(g);SBLOCK,XP(H)::R(J)
- Refutation
- P(d);
- Try
- Actual
- S(F);
- Threat
- S(F),XP(g)
- Vars
- K(c);N_SPINB(a),OGATEB,S_FLIGHT,XS(F)::QAB(A)
- P(d);SBLOCK,XS(F)::R(J)
- P(g);OGATE,XP(H)::R1(J),XP(g)
- P(f);SBLOCK::S(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).