MESON Chess Problem Database
Problem Display
PID: 109880 (B1N1rR1b/6q1/p4R2/2p1k3/6p1/2P1p1K1/3p3B/3Q4 w - - 0 1)
Brabec, Juraj
Lehen, Ludovit
3rd HM., Shakhmaty (Riga), 1984
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa7
- 2.Kxg4#
- 1...Qc7
- 2.Kxg4#
- 1...Qe7
- 2.Kxg4#
- 1...Re6
- 2.Rf5#
- 1...e2
- 2.Qxe2#
- 1...Qa7
- Tries
- 1.Qf3?
- threat
- 2.Qe4#
- 2.Qd5#
- 2.Qxe3#
- 2.Qf4#
- 2.Qf5#
- 1...Qxf6
- 2.Qe4#
- 2.Qd5#
- 1...Qxf8
- 2.Kxg4#
- 2.Qf4#
- 2.Qf5#
- 1...Rxf8
- 2.Qf4#
- 2.Qf5#
- 1...d1Q
- 2.Qe4#
- 2.Qxe3#
- 2.Qf4#
- 2.Qf5#
- 1...d1S
- 2.Qe4#
- 2.Qd5#
- 2.Qf4#
- 2.Qf5#
- 1...d1R
- 2.Qe4#
- 2.Qxe3#
- 2.Qf4#
- 2.Qf5#
- 1...Qh6
- 2.Rxe8#
- 2.Qe4#
- 2.Qd5#
- 2.Qf5#
- 1...Qg5
- 2.Rxe8#
- 2.Qe4#
- 2.Qd5#
- 1...Qg6
- 2.Qd5#
- 2.Qf4#
- 1...Qb7
- 2.Kxg4#
- 2.Qf5#
- 1...Qd7
- 2.Qe4#
- 2.Qxe3#
- 2.Qf4#
- 1...Qf7
- 2.Kxg4#
- 2.Qf4#
- 2.Qf5#
- 1...Qh7
- 2.Qd5#
- 2.Qf4#
- 1...Qg8
- 2.Qe4#
- 2.Qxe3#
- 2.Qf4#
- 2.Qf5#
- 1...Rd8
- 2.Qe4#
- 2.Qxe3#
- 2.Qf4#
- 2.Qf5#
- 1...e2
- 2.Qxe2#
- 2.Qe4#
- 2.Qd5#
- 2.Qe3#
- 2.Qf4#
- 2.Qf5#
- 1...gxf3+!
- threat
- 1.Qa4?
- threat
- 2.Qe4#
- 2.Qf4#
- 1...Qxf6
- 2.Qe4#
- 1...Qxf8
- 2.Qf4#
- 1...Rxf8
- 2.Qf4#
- 1...Qf7
- 2.Qf4#
- 1...Qh6
- 2.Qxe8#
- 2.Qe4#
- 1...Qg5
- 2.Qxe8#
- 2.Qe4#
- 1...Qg6
- 2.Qf4#
- 1...Qh7
- 2.Qf4#
- 1...c4
- 2.Qa5#
- 1...Qb7!
- threat
- 1.Qb1?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Qxf6
- 2.Qe4#
- 1...Qxf8
- 2.Qf5#
- 1...Rxf8
- 2.Qf5#
- 1...Qb7
- 2.Qf5#
- 1...Qf7
- 2.Qf5#
- 1...Qg5
- 2.Qe4#
- 2.Qb8#
- 1...Qg6
- 2.Qb8#
- 1...Qd7
- 2.Qe4#
- 1...Qh7!
- threat
- 1.Qf1?
- threat
- 2.Qf4#
- 2.Qf5#
- 1...Qb7
- 2.Qf5#
- 1...Qh6
- 2.Rxe8#
- 2.Qf5#
- 1...Qg5
- 2.Rxe8#
- 1...Qg6
- 2.Qf4#
- 1...Qd7
- 2.Qf4#
- 1...Qh7
- 2.Qf4#
- 1...Qxf6!
- threat
- 1.Qf3?
- Keys
- 1.Qxg4!
- threat
- 2.Kg2#
- 2.Kf3#
- 2.Kh3#
- 2.Kh4#
- 1...Qxg4+
- 2.Kxg4#
- 1...Qxf6
- 2.Qe4#
- 1...Qxf8
- 2.Qf5#
- 2.Qf4#
- 2.Qg5#
- 1...Rxf8
- 2.Re6#
- 1...Qb7
- 2.Qf5#
- 1...Qf7
- 2.Qf5#
- 2.Qf4#
- 2.Qg5#
- 1...d1Q
- 2.Kg2#
- 2.Kh3#
- 2.Kh4#
- 1...d1B
- 2.Kg2#
- 2.Kh3#
- 2.Kh4#
- 1...Qh6
- 2.Qf5#
- 2.Qe4#
- 1...Qg5
- 2.Qxg5#
- 1...Qh7
- 2.Qf4#
- threat
- 1.Qxg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 5
- Sets
- Q(g);::B(B)+K(D),XP(c)
- R(h);SBLOCK::R1(E)
- P(b);OGATEB::QAR(A),XP(b)
- Tries
- Try
- Q(A);
- Threat
- DUALS(5)
- Refutation
- P(c);CHECK,XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(g);XR(E)::QAR1(A)
- Q(g);XR(H)::QAB1(A)
- R(h);XR(H)::QAB1(A)
- Q(g);::QAB1(A)
- P(d);OGATEB::QAR(A)
- Refutation
- Q(g);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(g);XR(E)::QAR1(A)
- Q(g);XR(H)::QAR1(A)
- R(h);XR(H)::QAR1(A)
- Q(g);::QAR1(A)
- Q(g);N_GUARD::QAB(A)
- Refutation
- Q(g);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(g);::QAR1(A)
- Q(g);N_GUARD::R(H),XR(h)
- Q(g);::QAB1(A)
- Refutation
- Q(g);XR(E)
- Try
- Actual
- Q(A);P_SPINQ(A),XP(c)
- Threat
- DUALS(4)
- Vars
- Q(g);CHECK,XQ(A)::B(B)+K(D),XQ(g)
- Q(g);N_PINQ(A),XR(E)::QAR1(A)
- R(h);N_GUARD,XR(H)::R1(E)
- Q(g);N_PINQ(A)::QAR1(A)
- Q(g);N_GUARD::QAR2(A),XQ(g)
- Q(g);N_PINQ(A)::QAB1(A)
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).