MESON Chess Problem Database
Problem Display
PID: 86457 (N4Bq1/2R1Rp2/3k1p1r/p2p3r/7p/3K4/2P5/5Q2 w - - 0 1)
Livshits, Eduard Yakovlevich
Rudenko, Valentin Fedorovich
Boletim da UBP, 1962
#2
7 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qh7+
- 2.Re4#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...Qg2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...Qg3+
- 2.Re3#
- 1...Qg4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...Qg5
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...Qg6+
- 2.Re4#
- 1...Rh7
- 2.Qxf6#
- 1...Rh8
- 2.Qxf6#
- 1...f5
- 2.Qf4#
- 1...Qh7+
- Tries
- 1.Kd2?
- threat
- 2.Qa6#
- 1...Qg2+
- 2.Re2#
- 1...Qg5+
- 2.Re3#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...d4!
- threat
- 1.Kc3?
- threat
- 2.Qa6#
- 1...Qg3+
- 2.Re3#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...d4+!
- threat
- 1.Qe2?
- threat
- 2.Re6#
- 2.Red7#
- 1...Qh7+
- 2.Re4#
- 1...Qg3+
- 2.Re3#
- 1...Qg6+
- 2.Re4#
- 1...Qxf8
- 2.Red7#
- 1...d4
- 2.Red7#
- 1...Re5!
- threat
- 1.Qa1?
- threat
- 2.Qa3#
- 1...Qh7+
- 2.Re4#
- 1...Qg3+
- 2.Re3#
- 1...Qg6+
- 2.Re4#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Re8#
- 1...Qg4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Re8#
- 1...d4!
- threat
- 1.Qb1?
- threat
- 2.Qb6#
- 1...Qh7+
- 2.Re4#
- 1...Qg3+
- 2.Re3#
- 1...Qg6+
- 2.Re4#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...d4!
- threat
- 1.Qc1?
- threat
- 2.Qa3#
- 1...Qh7+
- 2.Re4#
- 1...Qg3+
- 2.Re3#
- 1...Qg6+
- 2.Re4#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...Qg4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...d4!
- threat
- 1.Qe1?
- threat
- 2.Re6#
- 2.Red7#
- 1...Qh7+
- 2.Re4#
- 1...Qg3+
- 2.Re3#
- 1...Qg6+
- 2.Re4#
- 1...Qxf8
- 2.Red7#
- 1...d4
- 2.Red7#
- 1...Re5!
- threat
- 1.Qg1?
- threat
- 2.Qc5#
- 2.Qb6#
- 1...Qh7+
- 2.Re4#
- 1...Qg3+
- 2.Re3#
- 1...Qg6+
- 2.Re4#
- 1...Qxg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...d4!
- threat
- 1.Qf2?
- threat
- 2.Qc5#
- 2.Qb6#
- 1...Qh7+
- 2.Re4#
- 1...Qg3+
- 2.Re3#
- 1...Qg6+
- 2.Re4#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re8#
- 1...d4!
- threat
- 1.Qf5?
- threat
- 2.Re6#
- 2.Red7#
- 2.Qd7#
- 1...Qg3+
- 2.Re3#
- 1...Qxf8
- 2.Red7#
- 2.Qd7#
- 1...Qh7
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Re6#
- 2.Red7#
- 2.Rxf7#
- 2.Re8#
- 1...Qg4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Re6#
- 2.Red7#
- 2.Rxf7#
- 2.Re8#
- 1...Qg6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Re6#
- 2.Red7#
- 2.Rxf7#
- 2.Re8#
- 1...Rxf5!
- threat
- 1.Kd2?
- Keys
- 1.Kd4!
- threat
- 2.Qa6#
- 1...Qg1+
- 2.Re3#
- 1...Qg4+
- 2.Re4#
- threat
- 1.Kd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- R(g);N_GUARD::QAR2(A),XP(f)
- P(f);S_CUTR(d)::QAB(A)
- Tries
- Try
- K(C);P-FLIGHT
- Threat
- QAR(A)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- P(c);
- Try
- K(C);P-FLIGHT
- Threat
- QAR(A)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- P(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Q(i);XB(G)::R1(E)
- P(c);::B(G)+R(E),DCHECK
- Refutation
- R(d);
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- QAR2(A)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Q(i);XB(G)::R1(E)
- P(c);::B(G)+R(E),DCHECK
- Refutation
- R(d);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
- Refutation
- R(d);XQ(A)
- Try
- Actual
- K(C);P-FLIGHT
- Threat
- QAR(A)
- Vars
- Q(i);CHECK,N_GUARD::B(G)+R(E)
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).