MESON Chess Problem Database

Problem Display
PID: 65193 (4Q3/1n1p2Nn/5P2/3PPP2/3NkPRp/2P1p2K/B3P3/8 w - - 0 1)

Zgerski, Gennadi Bronislavovich

Die Schwalbe, 2005

4Q3/1n1p2Nn/5P2/3PPP2/3NkPRp/2P1p2K/B3P3/8

#2

13 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.exd6#
    • 1...Sg5+
      • 2.fxg5#
    • 1...Sxf6
      • 2.exf6#
    • 1...d6
      • 2.exd6#
  • Tries
    • 1.Sb5?
      • 1...Sg5+
        • 2.fxg5#
      • 1...Sxf6
        • 2.exf6#
      • 1...Sa5
        • 2.Sd6#
      • 1...Sc5
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
        • 2.exd6#
      • 1...Sd8
        • 2.Sd6#
      • 1...d6
        • 2.exd6#
      • 1...Sf8!
  • Keys
    • 1.Sde6!
      • 1...Sg5+
        • 2.Sxg5#
      • 1...Sxf6
        • 2.Sg5#
      • 1...dxe6
        • 2.Qa4#
      • 1...Sa5
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sd6
        • 2.Sc5#
      • 1...Sd8
        • 2.Sc5#
      • 1...Sf8
        • 2.Sg5#
      • 1...d6
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(d);OGATE::QAR(M)+P(I),XS(d)
    • S(f);CHECK,OGATE::R(G)+P(F),XS(f)
    • S(f);OGATE,XP(K)::QAR(M)+P(I),XS(f)
    • P(e);OGATE::QAR(M)+P(I),XP(e)
  • Tries
    • Try
      • S(E);
      • Vars
        • S(f);CHECK,OGATE::R(G)+P(F),XS(f)
        • S(f);OGATE,XP(K)::QAR(M)+P(I),XS(f)
        • S(d);N_GUARD::S(E)
        • P(e);OGATE::QAR(M)+P(I),XP(e)
      • Refutation
        • S(f);
  • Actual
    • S(E);
    • Vars
      • S(f);CHECK,N_GUARD::S(E),XS(f)
      • S(f);N_GUARD,XP(K)::S(E)
      • P(e);OGATE,XS(E)::QAR(M)
      • S(d);N_GUARD::S(E)
      • S(d);N_GUARD::S(E),XS(d)
      • S(f);N_GUARD::S(E)
      • P(e);OGATE::QAR(M)
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).