MESON Chess Problem Database

Problem Display
PID: 286624 (8/8/5p1p/6k1/8/6P1/2Q3K1/3B4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problem Paradise, 2019

8/8/5p1p/6k1/8/6P1/2Q3K1/3B4

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2026
5454 Near Snap 2026
3713 Snap 2026

SOLUTION

  • SOUND
  • Tries
    • 1.Bg4?
      • threat
        • 2.Qf5#
      • 1...Kxg4
        • 2.Qg6#
      • 1...f5
        • 2.Qxf5#
      • 1...h5!
    • 1.Bh5?
      • threat
        • 2.Qg6#
      • 1...Kxh5
        • 2.Qf5#
      • 1...f5!
  • Keys
    • 1.Qh7!
      • 1...f5
        • 2.Qg7#
      • 1...h5
        • 2.Qxh5#

Anticipated by 11740(1971), 245453(2015)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XB(A)::QAR2(B)
        • P(b);::QAR1(B),XP(b)
      • Refutation
        • P(c);
    • Try
      • B(A);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XB(A)::QAR2(B)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Vars
      • P(b);SBLOCK::QAR2(B)
      • P(c);OGATE::QAR1(B),XP(c)
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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).