MESON Chess Problem Database
Problem Display
PID: 12047 (R2K4/5NQ1/3Pkp2/3n3p/1p2B2P/1P2pP2/4P3/6N1 w - - 0 1)
Lider, Valentin Viktorovich
Die Schwalbe, 1974
#2
11 + 6
SOLUTION
- SOUND
- Tries
- 1.Ra5?
- 1...Sc3
- 2.Bf5#
- 1...Sf4
- 2.Bf5#
- 1...Sb6
- 2.Bf5#
- 1...Sc7
- 2.Bf5#
- 1...f5
- 2.Bxd5#
- 1...Se7!
- 1...Sc3
- 1.Ra6?
- 1...Sc3
- 2.d7#
- 1...Sf4
- 2.d7#
- 1...Sc7
- 2.dxc7#
- 1...Se7
- 2.dxe7#
- 1...f5
- 2.Sg5#
- 1...Sb6!
- 1...Sc3
- 1.Ra7?
- 1...Sc3
- 2.Re7#
- 1...Sf4
- 2.Re7#
- 1...Sb6
- 2.Re7#
- 1...Se7
- 2.Rxe7#
- 1...f5
- 2.Qe5#
- 1...Sc7!
- 1...Sc3
- 1.Qf8?
- 1...Sc3
- 2.Qe7#
- 2.Qe8#
- 1...Sf4
- 2.Qe7#
- 2.Qe8#
- 1...Sb6
- 2.Qe7#
- 2.Qe8#
- 1...Sc7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...f5!
- 1...Sc3
- 1.Ra5?
- Keys
- 1.Sh3!
- 1...Sc3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...f5
- 2.Shg5#
- 1...Sc3
- 1.Sh3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(J);
- Vars
- S(c);::B(E)
- P(f);SBLOCK::B(E),XS(c)
- Refutation
- S(c);
- Try
- R(J);
- Vars
- S(c);N_GUARD::R(J)+P(G)
- S(c);OGATE::R(J)+P(G),XS(c)
- P(f);N_GUARD::S(H)
- Refutation
- S(c);
- Try
- R(J);
- Vars
- S(c);N_GUARD::R1(J)
- S(c);N_GUARD::R1(J),XS(c)
- P(f);OGATE::QAR1(I)
- Refutation
- S(c);
- Try
- Q(I);
- Vars
- S(c);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAR1(I),XS(c)
- Refutation
- P(f);
- Try
- Actual
- S(A);
- Vars
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- P(f);N_GUARD::S(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).