MESON Chess Problem Database

Problem Display
PID: 2695 (3Br3/4Ppp1/3NNkPp/3P4/3P2P1/6K1/8/8 w - - 0 1)

Stubbs, Charles Francis

Source?, 0000

3Br3/4Ppp1/3NNkPp/3P4/3P2P1/6K1/8/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.exf8S#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Se4#
      • 1...Kg5
        • 2.Se4#
      • 1...Rxd8
        • 2.exd8Q#
        • 2.exd8B#
      • 1...fxg6!
  • Keys
    • 1.Sf8!
      • threat
        • 2.Se4#
      • 1...Kg5
        • 2.Se4#
      • 1...Rxd8
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Rxf8
        • 2.exf8S#
      • 1...fxg6
        • 2.Sh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);OGATE::PXR(e)=S
  • Tries
    • Try
      • S(F);
      • Threat
        • S(E)
      • Vars
        • K(a);S_FLIGHT::S(E)
        • R(e);OGATE,XB(I)::PXR(e)=Q
      • Refutation
        • P(c);XP(G)
  • Actual
    • S(F);
    • Threat
      • S(E)
    • Vars
      • K(a);S_FLIGHT::S(E)
      • R(e);OGATE,XB(I)::PXR(e)=Q
      • R(e);OGATE,XS(F)::PXR(e)=S
      • P(c);SBLOCK,XP(G)::S(F)
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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).