MESON Chess Problem Database

Problem Display
PID: 23129 (K7/8/kB1n4/bpQ5/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

K7/8/kB1n4/bpQ5/8/8/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qxa5#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Qa7#
      • 1...Bb6
        • 2.Qxb6#
      • 1...b4
        • 2.Qxa5#
      • 1...Sc8!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Qa7#
      • 1...Bb6
        • 2.Qxb6#
      • 1...Sc8
        • 2.Qxc8#
      • 1...b4
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::QAR1(A),XB(a)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • B(a);N_GUARD::QAR1(A),XB(a)
        • P(b);OGATE::QAR1(A),XB(a)
      • Refutation
        • S(d);
  • Actual
    • B(B);
    • Threat
      • QAR1(A)
    • Vars
      • B(a);N_GUARD::QAR1(A),XB(a)
      • S(d);N_GUARD::QAB(A),XS(d)
      • P(b);OGATE::QAR1(A),XB(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).