MESON Chess Problem Database

Problem Display
PID: 71679 (8/8/8/K7/Q2NkN2/1R6/8/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Problem Observer, 2006

8/8/8/K7/Q2NkN2/1R6/8/8

#2

5 + 1

5454 Near Snap 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • 1...Kxf4
        • 2.Qf5#
      • 1...Ke5!
  • Keys
    • 1.Qb5!
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kxf4
        • 2.Qf5#

Anticipated by 4617(1884), 182239(1906), 194171(1917)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT,XS(C)::QAR1(B)
      • K(a);P-FLIGHT,XS(D)::QAR1(B)
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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).