MESON Chess Problem Database

Problem Display
PID: 152229 (k5r1/1R6/3P3r/N6p/Q2p3b/1Kp5/8/8 w - - 0 1)

de Jong, Leonard Nicholaas

Good Companions (May), 1914

k5r1/1R6/3P3r/N6p/Q2p3b/1Kp5/8/8

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qe8#
  • Keys
    • 1.Rc7!
      • threat
        • 2.Sc6#
      • 1...Rb8+
        • 2.Sb7#
      • 1...Kb8
        • 2.Sc6#
      • 1...Rg5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD,S_CUTB(c)::QAR(B)
  • Actual
    • R(E);
    • Threat
      • QAR(B)+S(C)
    • Vars
      • R(g);CHECK,SBLOCK::QAR(B)+S(C)
      • K(f);P-FLIGHT::S(C)
      • R(g);N_GUARD,S_CUTB(c)::QAR(B)
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).