MESON Chess Problem Database

Problem Display
PID: 10159 (7r/6pk/7N/3Q4/6K1/8/8/8 w - - 0 1)

Albarda, Johannes

Hartong, Jan

Probleemblad, 1962

7r/6pk/7N/3Q4/6K1/8/8/8

#2

3 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
2786 More Fun with Chess Miniatures 2000
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh6
      • 2.Qh5#
    • 1...gxh6
      • 2.Qf7#
  • Tries
    • 1.Qf5+?
      • 1...Kxh6
        • 2.Qh5#
      • 1...g6!
  • Keys
    • 1.Sg8!
      • 1...Kg6
        • 2.Qf5#
      • 1...Rxg8
        • 2.Qh5#
      • 1...g5
        • 2.Qf7#
      • 1...g6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(b);OGATEB,P-FLIGHT,XS(C)::QAR1(B)
    • P(a);OGATEB,SBLOCK,XS(C)::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR1(B)
      • Refutation
        • P(a);P_SPINP(a)
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • R(c);SBLOCK,XS(C)::QAR2(B)
      • P(a);OGATEB::QAR2(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).