MESON Chess Problem Database

Problem Display
PID: 11598 (4N3/r3p3/8/5k1K/2P5/4Q3/8/8 w - - 0 1)

Aitov, Fatikh Sadikovich

64 Shakhmatnoe obozrenie, 1970

4N3/r3p3/8/5k1K/2P5/4Q3/8/8

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
136 Problem Observer 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5+?
      • 1...Ke6
        • 2.Qd5#
      • 1...Ke4!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Qd5#
      • 1...Ke5!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Sg7#
      • 1...Ke6
        • 2.Qd5#
      • 1...e5
        • 2.Qg4#
      • 1...e6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • S(D)
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • P(c);SBLOCK::QAB1(A)
      • P(c);N_GUARD,SBLOCK::S(D)
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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).