MESON Chess Problem Database

Problem Display
PID: 15839 (8/8/8/8/5QP1/6Pk/5P1n/7K w - - 0 1)

Rychkov, Vladimir Nikolaevich

2/3 Prize, Leninskoe plemya, 1988

8/8/8/8/5QP1/6Pk/5P1n/7K

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.g5?
      • threat
        • 2.Qh4#
      • 1...Sf3
        • 2.Qf5#
      • 1...Sg4!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qh5#
      • 1...Sf3
        • 2.g5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(E);
      • Threat
        • QAR1(D)
      • Vars
        • S(a);N_GUARD::QAB(D)
      • Refutation
        • S(a);
  • Actual
    • Q(D);
    • Threat
      • QAR2(D)
    • Vars
      • S(a);N_GUARD::QAB(D)+P(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).