MESON Chess Problem Database

Problem Display
PID: 207045 (4KN2/8/2p5/2pk4/8/8/1Q2P3/8 w - - 0 1)

JB of Bridport (Brown, John)

Source?, 1864

4KN2/8/2p5/2pk4/8/8/1Q2P3/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sg6?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke6
        • 2.Qe5#
      • 1...c4
        • 2.Qe5#
      • 1...Kc4!
  • Keys
    • 1.Sd7!
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke6
        • 2.Qe5#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • K(b);P-FLIGHT::QAB1(A)
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(b);S_FLIGHT::S(D)
      • K(b);S_FLIGHT::QAR1(A)
      • K(b);P-FLIGHT::QAB1(A)
      • P(a);SBLOCK::QAR1(A)
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).