MESON Chess Problem Database

Problem Display
PID: 121069 (8/8/8/1k6/R7/2K5/2Q5/8 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Ottawa Citizen, 1884

8/8/8/1k6/R7/2K5/2Q5/8

#2

3 + 1

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Ra6?
      • 1...Kc5
        • 2.Qf5#
      • 1...Kxa6!
  • Keys
    • 1.Qg6!
      • 1...Kxa4
        • 2.Qa6#
      • 1...Kc5
        • 2.Ra5#

This anticipates 56205(1903), 198642(1921), 162851(2003)

This is a version of 4572

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT,XR(C)::QAR2(A)
      • K(a);P-FLIGHT::R(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).