MESON Chess Problem Database

Problem Display
PID: 273931 (r3Br2/4Np2/R6N/4R1Pk/4p3/6Pp/4Kn2/2B5 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2023

r3Br2/4Np2/R6N/4R1Pk/4p3/6Pp/4Kn2/2B5

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rh8
      • 2.Bxf7#
  • Tries
    • 1.g4+?
      • 1...Kh4
        • 2.Sef5#
      • 1...Sxg4!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sf4#
      • 1...fxg6
        • 2.Bxg6#
      • 1...Sd3
        • 2.g4#
      • 1...f5
        • 2.gxf5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(g);N_GUARD::B(I),XP(e)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • K(d);N_SPINP(e),P-FLIGHT,S_CUTS(a)::S(H)
      • Refutation
        • S(a);XP(C)
  • Actual
    • S(H);N_PINP(e)
    • Threat
      • S(H)
    • Vars
      • P(e);OGATE,P_SPINP(e),XS(H)::B(I),XP(e)
      • S(a);N_GUARD::P(C)
      • P(e);OGATE::R(D)+P(E),XP(e),EP
HTML5 logo

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).