MESON Chess Problem Database
Problem Display
PID: 176265 (1r2Q3/2n1P1nR/1B1kP1b1/N1R3N1/q2p4/pB6/8/2K5 w - - 0 1)
Lider, Valentin Viktorovich
Schach-Echo, 1972
#2
10 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxb3
- 2.Qd7#
- 1...Qc6
- 2.Sc4#
- 1...Qd7
- 2.Sc4#
- 2.Qxd7#
- 1...Qb4
- 2.Qd7#
- 1...Qc4+
- 2.Sxc4#
- 1...Qxa5
- 2.Qd7#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Rc8
- 2.Sb7#
- 1...Rd8
- 2.Sb7#
- 1...Bb1
- 2.Sf7#
- 1...Bc2
- 2.Sf7#
- 1...Bd3
- 2.Sf7#
- 1...Be4
- 2.Sxe4#
- 2.Sf7#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Se4#
- 1...Bf7
- 2.Se4#
- 2.Sxf7#
- 1...Bxh7
- 2.Sf7#
- 1...Sb5
- 2.Rd5#
- 2.Qd7#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Scxe6
- 2.Rd5#
- 1...Sa8
- 2.Rd5#
- 1...Sf5
- 2.Se4#
- 1...Qxb3
- Tries
- 1.Qd8+?
- 1...Qd7
- 2.Sc4#
- 2.Qxd7#
- 1...Rxd8!
- 1...Qd7
- 1.Qd8+?
- Keys
- 1.Qf8!
- threat
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qc4+
- 2.Sxc4#
- 1...Qxb3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qxa5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rxb6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rxf8
- 2.exf8Q#
- 2.exf8B#
- 1...Bxh7
- 2.Sf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Scxe6
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Qb5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qc6
- 2.Sc4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qe8
- 2.Sc4#
- 1...Qb4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rb7
- 2.Sxb7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Ra8
- 2.Sb7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rc8
- 2.Sb7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rd8
- 2.Sb7#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Re8
- 2.Sb7#
- 1...Bb1
- 2.Sf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bc2
- 2.Sf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bd3
- 2.Sf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Be4
- 2.Sxe4#
- 2.Sf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bf5
- 2.Sf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bh5
- 2.Se4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bf7
- 2.Se4#
- 2.Sxf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Be8
- 2.Se4#
- 1...Sb5
- 2.Rd5#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sa6
- 2.Rd5#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sa8
- 2.Rd5#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sce8
- 2.Rd5#
- 1...Sh5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sge8
- 2.Qf4#
- 1...a2
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...d3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- threat
- 1.Qf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 17
- Sets
- Q(b);N_GUARD,XB(B)::QAR1(J)
- Q(b);N_GUARD,P_PINR(D)::S(C)
- Q(b);N_GUARD::QAR1(J)
- Q(b);CHECK,N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD,XS(C)::QAR1(J)
- R(h);N_GUARD::S(C),XR(h)
- R(h);N_GUARD::S(C)
- B(e);N_GUARD::S(E)
- B(e);N_GUARD,XR(I)::S(E)
- S(f);N_GUARD::R1(D),XS(f)
- S(f);N_GUARD::R1(D)
- S(f);N_GUARD,XP(G)::R1(D)
- S(g);S_CUTB(e)::S(E)
- Tries
- Try
- Q(J);CHECK
- Refutation
- R(h);XQ(J)
- Try
- Actual
- Q(J);
- Threat
- DUALS(4)
- Vars
- Q(b);CHECK,N_GUARD::S(C),XQ(b)
- R(h);OGATE,XQ(J)::PXR(h)=Q
- S(f);N_GUARD,XP(G)::R1(D)
- S(f);N_GUARD::R1(D),XS(f)
- Q(b);N_GUARD::S(C)
- R(h);N_GUARD::S(C)
- B(e);N_GUARD::S(E)
- S(f);N_GUARD::R1(D)
- S(g);::QAB(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).