MESON Chess Problem Database
Problem Display
PID: 203798 (3N4/3n4/3p4/3kpK2/R2p4/B7/3NPP2/8 w - - 0 1)
Rumyantsev, Sergei Yuryewitch
4th HM., Pustovoi MT, 1974
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Sb6
- 2.Ra5#
- 1...Sf6
- 2.Ra5#
- 1...Sb8
- 2.Ra5#
- 1...Sf8
- 2.Ra5#
- 1...d3
- 2.e4#
- 1...Sb6
- Tries
- 1.Sc4?
- 1...d3
- 2.Se3#
- 1...Sc5
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 1...Sf6
- 2.Sb6#
- 1...Sb8
- 2.Sb6#
- 1...Sf8
- 2.Sb6#
- 1...e4!
- 1...d3
- 1.Ra6?
- threat
- 2.Rxd6#
- 1...Sb6
- 2.Ra5#
- 1...Sc5!
- threat
- 1.f3?
- 1...Sb6
- 2.Ra5#
- 1...Sf6
- 2.Ra5#
- 1...Sb8
- 2.Ra5#
- 1...Sf8
- 2.Ra5#
- 1...d3
- 2.e4#
- 1...e4
- 2.fxe4#
- 1...Sc5!
- 1...Sb6
- 1.Sc4?
- Keys
- 1.Se4!
- 1...Sc5
- 2.Sf6#
- 1...Sb6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb8
- 2.Sf6#
- 1...Sf8
- 2.Sf6#
- 1...d3
- 2.Sc3#
- 1...Sc5
- 1.Se4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(e);N_GUARD::R(E)
- P(a);N_GUARD::P(B)
- Tries
- Try
- S(A);
- Vars
- P(a);N_GUARD::S(A)
- S(e);N_GUARD::S(A)
- S(e);N_GUARD::S(A),XS(e)
- Refutation
- P(c);
- Try
- R(E);
- Threat
- R1(E),XP(d)
- Vars
- S(e);N_GUARD::R(E)
- Refutation
- S(e);
- Try
- P(C);
- Vars
- S(e);N_GUARD::R(E)
- P(a);N_GUARD::P(B)
- P(c);OGATE::P(C),XP(c)
- Refutation
- S(e);
- Try
- Actual
- S(A);
- Vars
- S(e);N_GUARD::S(A)
- S(e);N_GUARD::S(A),XS(e)
- P(a);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).