MESON Chess Problem Database

Problem Display
PID: 68610 (knn3r1/7R/1PP5/8/8/7K/8/6r1 w - - 0 1)

Anonymous

Source?, 1350

knn3r1/7R/1PP5/8/8/7K/8/6r1

#2

4 + 5

302 Schachzeitung 1860

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Ra7#
    • 1...Sa7
      • 2.Rxa7#
      • 2.b7#
  • Keys
    • 1.Ra7+!
      • 1...Sxa7
        • 2.b7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(d);N_GUARD::R1(D)
  • Actual
    • R(D);CHECK
    • Vars
      • S(d);SBLOCK,XR(D)::P(B)
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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).