MESON Chess Problem Database
Problem Display
PID: 259100 (Q6r/6R1/r1pPk3/b7/1N2Np1n/8/2B5/B4K2 w - - 0 1)
Zharkov, Nikolai Abramovich
Buletin Problemistic, 1989
#2
8 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kf5
- 2.Sc5#
- 1...Rh5
- 2.Qc8#
- 1...Rh6
- 2.Qc8#
- 1...Rh7
- 2.Qc8#
- 1...Rc8
- 2.Qxc8#
- 1...Bd8
- 2.Qc8#
- 1...Sf5
- 2.Bb3#
- 1...c5
- 2.Qd5#
- 1...Kf5
- Tries
- 1.Rg6+?
- 1...Kf5
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 1...Kd7
- 2.Sc5#
- 1...Kf7
- 2.Sg5#
- 1...Sxg6!
- 1...Kf5
- 1.Qxc6?
- threat
- 2.Sc5#
- 2.Sg5#
- 2.Qd5#
- 2.Qd7#
- 1...Kf5
- 2.Sc5#
- 2.Qd5#
- 2.Qd7#
- 1...Bxb4
- 2.Sg5#
- 1...Ra7
- 2.Sc5#
- 2.Sg5#
- 2.Qd5#
- 1...Rh5
- 2.Qd7#
- 2.Qc8#
- 1...Rd8
- 2.Sc5#
- 2.Sg5#
- 2.Qd5#
- 1...Bb6
- 2.Sg5#
- 2.Qd5#
- 2.Qd7#
- 1...Bd8
- 2.Sc5#
- 2.Qd5#
- 2.Qd7#
- 2.Qc8#
- 1...Sf3
- 2.Sc5#
- 2.Qd5#
- 2.Qd7#
- 1...Rxc6!
- threat
- 1.Qe8+?
- 1...Kf5
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sf6#
- 2.Rg5#
- 2.Qd7#
- 2.Qf7#
- 2.Qe5#
- 1...Rxe8!
- 1...Kf5
- 1.Qf8?
- threat
- 2.Sc5#
- 2.Sg5#
- 2.Bb3#
- 2.Re7#
- 2.Qf6#
- 2.Qf7#
- 1...Bxb4
- 2.Bb3#
- 2.Qf7#
- 1...Ra7
- 2.Sc5#
- 2.Sg5#
- 2.Bb3#
- 2.Qf6#
- 1...Rh5
- 2.Re7#
- 2.Qf6#
- 2.Qf7#
- 2.Qc8#
- 1...Rh6
- 2.Sc5#
- 2.Sg5#
- 2.Bb3#
- 2.Re7#
- 2.Qf7#
- 2.Qc8#
- 1...Rh7
- 2.Sc5#
- 2.Sg5#
- 2.Bb3#
- 2.Qf6#
- 2.Qf7#
- 2.Qc8#
- 1...Bb6
- 2.Sg5#
- 2.Bb3#
- 2.Re7#
- 2.Qf6#
- 2.Qf7#
- 1...Bd8
- 2.Sc5#
- 2.Bb3#
- 2.Qf7#
- 1...Sf3
- 2.Sc5#
- 2.Bb3#
- 2.Re7#
- 2.Qf6#
- 2.Qf7#
- 1...Sf5
- 2.Sc5#
- 2.Sg5#
- 2.Bb3#
- 2.Qf6#
- 2.Qf7#
- 1...Sg6
- 2.Sc5#
- 2.Sg5#
- 2.Bb3#
- 2.Qf6#
- 2.Qf7#
- 1...c5
- 2.Sxc5#
- 2.Sg5#
- 2.Re7#
- 2.Qf6#
- 2.Qf7#
- 1...Rxf8!
- threat
- 1.Qg8+?
- 1...Kf5
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sf6#
- 2.Rg5#
- 2.Qf7#
- 1...Rxg8!
- 1...Kf5
- 1.Rg6+?
- Keys
- 1.Rf7!
- threat
- 2.Bb3#
- 1...Kxf7
- 2.Sg5#
- 1...Rh5
- 2.Qe8#
- 1...c5
- 2.Qd5#
- threat
- 1.Rf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- K(f);N_GUARD,S_FLIGHT::B(C)+S(E)
- R(g);N_GUARD::QAB(H)
- R(g);N_GUARD::QAB(H),XR(g)
- B(c);S_CUTR(g)::QAB(H)
- S(b);SBLOCK::B(C)
- P(e);OGATE::QAB1(H)
- Tries
- Try
- R(G);CHECK
- Vars
- K(f);N_GUARD,S_FLIGHT::S(E)
- Refutation
- S(b);XR(G)
- Try
- Q(H);XP(e)
- Threat
- DUALS(4)
- Vars
- B(c);XS(D)::S(E)
- Refutation
- R(d);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- R(g);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(6)
- Refutation
- R(g);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- R(g);XQ(H)
- Try
- Actual
- R(G);
- Threat
- B(C)
- Vars
- K(f);N_GUARD,S_FLIGHT,XR(G)::S(E)
- R(g);N_GUARD::QAR2(H)
- P(e);OGATE::QAB1(H)
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).