MESON Chess Problem Database

Problem Display
PID: 51500 (1n4K1/3pQ3/1p1rR3/1Nbk1N2/8/q1pBp3/8/8 w - - 0 1)

Davison, HD

The Guardian, 1962

1n4K1/3pQ3/1p1rR3/1Nbk1N2/8/q1pBp3/8/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Re5#
    • 1...Sc6
      • 2.Sc7#
  • Keys
    • 1.Qg5!
      • threat
        • 2.Sfd4#
      • 1...Kc6
        • 2.Qg2#
      • 1...Kxe6
        • 2.Sg7#
      • 1...Rxe6
        • 2.Se7#
      • 1...dxe6
        • 2.Se7#
      • 1...Bd4
        • 2.Sfxd4#
      • 1...Sc6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(g);SBLOCK::R1(D)
    • S(i);SBLOCK::S(B)
  • Actual
    • Q(E);
    • Threat
      • QAR(E)+S(C)
    • Vars
      • K(e);P_SPINR(g),S_FLIGHT::QAB(E)
      • K(e);S_FLIGHT,XR(D)::S(C)
      • R(g);SBLOCK,XR(D)::QAR(E)+S(C),DCHECK
      • P(h);SBLOCK,XR(D)::QAR(E)+S(C),DCHECK
      • B(d);::QAR(E)+S(C),XB(d)
      • S(i);SBLOCK::S(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).