MESON Chess Problem Database

Problem Display
PID: 153153 (4Rrk1/6q1/8/8/6Q1/5R2/8/7K w - - 0 1)

Neyndorff, Luke

StrateGems, 2011

4Rrk1/6q1/8/8/6Q1/5R2/8/7K

#2

4 + 3

SOLUTION

  • SOUND
  • Keys
    • 1.Rf7!
      • threat
        • 2.Qxg7#
      • 1...Kxf7
        • 2.Qe6#
      • 1...Kh7
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Qxg4
        • 2.Rexf8#
      • 1...Qg5
        • 2.Rexf8#
      • 1...Qg6
        • 2.Rexf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Actual
    • R(B);
    • Threat
      • QAR1(C),XQ(a)
    • Vars
      • K(c);N_SPINQ(a),N_SPINR(b),OGATEB,S_FLIGHT,XR(B)::QAB1(C)
      • K(c);N_SPINR(b),S_FLIGHT::QAR1(C),XQ(a)
      • K(c);N_SPINQ(a),P-FLIGHT::QAB1(C),XQ(a)
      • Q(a);N_SPINQ(a),XQ(C)::R1(D),XR(b)
      • Q(a);::R1(D),XR(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).