MESON Chess Problem Database

Problem Display
PID: 102424 (2n5/7k/5KNN/8/8/8/1P6/Q7 w - - 0 1)

Larose, Franck

Europe Echecs, 1989

2n5/7k/5KNN/8/8/8/1P6/Q7

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh6
      • 2.Qh1#
  • Tries
    • 1.Sf8+?
      • 1...Kxh6
        • 2.Qh1#
      • 1...Kh8!
  • Keys
    • 1.Qa8!
      • 1...Kxh6
        • 2.Qh1#
      • 1...Sb6
        • 2.Qh8#
      • 1...Sd6
        • 2.Qh8#
      • 1...Sa7
        • 2.Qh8#
      • 1...Se7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XS(E)::QAR(A)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(E)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(E)::QAR(A)
      • S(b);OGATE::QAR1(A)
      • S(b);OGATE,SBLOCK::QAR1(A)
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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).