MESON Chess Problem Database

Problem Display
PID: 17462 (5n1Q/7b/8/8/3P4/6K1/4N3/7k w - - 0 1)

Bukne, Roald

2nd Prize, Tidskrift for Schack TT, 1946

5n1Q/7b/8/8/3P4/6K1/4N3/7k

#2

4 + 3

103 Problemisten 1946
4884 154 norske miniatyrproblemer 1974
3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Qxh7#
    • 1...Sg6
      • 2.Qa8#
    • 1...Sd7
      • 2.Qxh7#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Qh4#
        • 2.Qf1#
        • 2.Qf3#
        • 2.Qh6#
      • 1...Sg6
        • 2.Qf1#
        • 2.Qf3#
        • 2.Qc6#
      • 1...Be4
        • 2.Qh4#
        • 2.Qf1#
        • 2.Qh6#
      • 1...Bg6
        • 2.Qh4#
        • 2.Qf1#
        • 2.Qf3#
      • 1...Bf5!
    • 1.Qxf8?
      • threat
        • 2.Qh6#
        • 2.Qf1#
        • 2.Qf3#
      • 1...Be4
        • 2.Qh6#
        • 2.Qf1#
      • 1...Bg6
        • 2.Qf1#
        • 2.Qf3#
      • 1...Bf5!
  • Keys
    • 1.d5!
      • 1...Sg6
        • 2.Qa1#
      • 1...Se6
        • 2.Qxh7#
      • 1...Sd7
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR(D),XB(b)
    • S(c);OGATE::QAB(D)
  • Tries
    • Try
      • Q(D);N_PINB(b)
      • Threat
        • DUALS(4)
      • Refutation
        • B(b);
    • Try
      • Q(D);N_PINB(b),XS(c)
      • Threat
        • DUALS(3)
      • Refutation
        • B(b);
  • Actual
    • P(C);
    • Vars
      • S(c);::QAB1(D)
      • S(c);N_GUARD::QAR(D),XB(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).