MESON Chess Problem Database

Problem Display
PID: 56670 (8/3Q4/5N2/7p/3N1P2/3Pk3/2K2p2/5n2 w - - 0 1)

Berger, Johann Nepomuk

Kockelkorn, Carl

Kohtz, Johannes

Bulletin de la FFE, 1923

8/3Q4/5N2/7p/3N1P2/3Pk3/2K2p2/5n2

#2

6 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qe6+?
      • 1...Kxd4
        • 2.Qe5#
        • 2.Qb6#
      • 1...Kxf4!
    • 1.Qe8+?
      • 1...Kxd4
        • 2.Qe5#
      • 1...Kxf4!
    • 1.Qe7+?
      • 1...Kxd4
        • 2.Qe5#
        • 2.Qa7#
      • 1...Kxf4!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Sd5#
      • 1...Kxd4
        • 2.Qa7#
      • 1...Kxf4
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);S_FLIGHT,XP(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(C)::QAB1(F)
      • Refutation
        • K(c);S_FLIGHT,XP(D)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);S_FLIGHT,XP(D)
  • Actual
    • Q(F);
    • Threat
      • S(E)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(C)::QAB(F)
      • K(c);S_FLIGHT,XP(D)::S(E)
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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).