MESON Chess Problem Database

Problem Display
PID: 20988 (1r2k2r/3pbp2/1p5p/4Q3/8/4N3/4K3/8 w k - 0 1)

Dawson, Thomas Rayner

Falkirk Herald, 1915

1r2k2r/3pbp2/1p5p/4Q3/8/4N3/4K3/8

#2

3 + 8

3680 Jan Knoppel Udvalgte Skakproblemer 1955

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Qxb8#
    • 1...Kf8
      • 2.Qxh8#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxb8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...0-0!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxb8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...0-0
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(g);N_SPINB(d),P-FLIGHT::QAR2(C),XR(f)
    • K(g);N_SPINB(d),P-FLIGHT::QAR2(C),XR(h)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(C),XB(d)
      • Vars
        • K(g);N_SPINB(d),P-FLIGHT::QAR2(C),XR(f)
        • K(g);N_SPINB(d),P-FLIGHT::QAR2(C),XR(h)
      • Refutation
        • K(g);0-0,N_SPINB(d)
  • Actual
    • S(B);
    • Threat
      • QAR1(C),XB(d)
    • Vars
      • K(g);N_SPINB(d),P-FLIGHT::QAR2(C),XR(f)
      • K(g);N_SPINB(d),P-FLIGHT::QAR2(C),XR(h)
      • K(g);0-0,N_SPINB(d),OGATEB::QAR1(C)
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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).