MESON Chess Problem Database
Problem Display
PID: 137757 (Q7/2p5/2RP4/4p3/2n1Rp2/5kPP/b1B1p3/4B2K w - - 0 1)
Ellerman, Arnoldo
Themes-64, 1963
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Rc3#
- 1...Sa3
- 2.Rc3#
- 1...Sa5
- 2.Rc3#
- 1...Sb6
- 2.Rc3#
- 1...Sxd6
- 2.Rc3#
- 1...fxg3
- 2.Qf8#
- 1...Sd2
- Tries
- 1.Rxc7?
- threat
- 2.Rxe5#
- 1...Sxd6
- 2.Rc3#
- 1...fxg3
- 2.Rf7#
- 2.Qf8#
- 1...Sd2
- 2.Rc3#
- 1...Sa3
- 2.Rc3#
- 1...Se3
- 2.Rxf4#
- 1...Sa5
- 2.Rc3#
- 1...Sb6
- 2.Rc3#
- 1...Sb2!
- threat
- 1.Rxc7?
- Keys
- 1.Rxe5!
- threat
- 2.Rxc7#
- 1...Sxe5
- 2.Rc3#
- 1...Sxd6
- 2.Rc3#
- 1...fxg3
- 2.Qf8#
- 1...cxd6
- 2.Rxd6#
- 1...Sb2
- 2.Rc3#
- 1...Sd2
- 2.Rc3#
- 1...Sa3
- 2.Rc3#
- 1...Se3
- 2.Be4#
- 1...Sa5
- 2.Rc3#
- 1...Sb6
- 2.Rc3#
- threat
- 1.Rxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(d);OGATE::R(G)
- S(d);OGATE,XP(H)::R(G)
- P(e);OGATEB,XP(D)::QAR(I)
- Tries
- Try
- R(G);XP(g)
- Threat
- QAB(I)+R(F),XP(f)
- Vars
- S(d);OGATE,XP(H)::R(G)
- S(d);OGATE::R(G)
- S(d);SBLOCK::QAB(I)+R(F),DCHECK,XP(e)
- Refutation
- S(d);
- Try
- Actual
- R(F);XP(f)
- Threat
- QAB(I)+R(G),XP(g)
- Vars
- S(d);OGATE,XR(F)::QAB(I)+R(G),DCHECK
- S(d);OGATE,XP(H)::QAB(I)+R(G),DCHECK
- P(e);OGATEB,XP(D)::QAR(I)
- P(g);OGATE,XP(H)::QAB(I)+R(G),XP(g)
- S(d);OGATE::QAB(I)+R(G),DCHECK
- S(d);SBLOCK::B(C)
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).