MESON Chess Problem Database

Problem Display
PID: 273930 (4QrbN/5p2/K3R2N/1R4Pk/7p/3p3p/8/2B5 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2023

4QrbN/5p2/K3R2N/1R4Pk/7p/3p3p/8/2B5

#2

8 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Rf6?
      • threat
        • 2.g6#
      • 1...d2
        • 2.Qe2#
      • 1...Rxe8!
    • 1.Qxf7+?
      • 1...Bxf7
        • 2.g6#
      • 1...Rxf7!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sf4#
      • 1...fxg6
        • 2.Qxg6#
      • 1...f5
        • 2.gxf5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Threat
        • R(B)+P(C)
      • Vars
        • P(a);N_GUARD::QAB(G)
      • Refutation
        • R(f);N_SPINP(e),XQ(G)
    • Try
      • Q(G);CHECK,XP(e)
      • Vars
        • B(g);XQ(G)::R(B)+P(C)
      • Refutation
        • R(f);XQ(G)
  • Actual
    • S(H);N_PINP(e)
    • Threat
      • S(H)
    • Vars
      • P(e);OGATE,P_SPINP(e),XS(H)::QAB1(G),XP(e)
      • P(e);OGATE::R(B)+P(C),XP(e),EP
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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).