MESON Chess Problem Database

Problem Display
PID: 148991 (5K2/3p4/1pb1k1B1/6P1/1P1Q4/8/8/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1934

5K2/3p4/1pb1k1B1/6P1/1P1Q4/8/8/8

#2

5 + 4

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qf6#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Bf5#
        • 2.Bf7#
      • 1...Bd5
        • 2.Qe7#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Bf5#
        • 2.Qf5#
      • 1...Be4
        • 2.Bf7#
      • 1...bxc5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Bf7#
      • 1...Kd5
        • 2.Bf7#
      • 1...d6
        • 2.Qf5#
      • 1...d5
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);SBLOCK::QAR1(B)
        • P(d);SBLOCK::QAR1(B)
        • B(b);::B(D)
      • Refutation
        • P(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • B(D)
    • Vars
      • K(c);S_FLIGHT::B(D)
      • P(d);SBLOCK::QAB1(B)
      • P(d);SBLOCK::B(D)
HTML5 logo

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).