MESON Chess Problem Database

Problem Display
PID: 139046 (k1N5/1p3p2/5R2/bN4R1/K1p5/8/5nqB/7B w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

The Problemist, 1937

k1N5/1p3p2/5R2/bN4R1/K1p5/8/5nqB/7B

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Ra6#
    • 1...Qh3
      • 2.Ra6#
    • 1...Qg1
      • 2.Ra6#
    • 1...Qg4
      • 2.Ra6#
    • 1...Qxg5
      • 2.Ra6#
    • 1...Be1
      • 2.Sb6#
    • 1...Bd2
      • 2.Sb6#
    • 1...Bc3
      • 2.Sb6#
    • 1...Bb4
      • 2.Sb6#
    • 1...Bb6
      • 2.Sxb6#
  • Keys
    • 1.Rg8!
      • threat
        • 2.Sb6#
      • 1...Qxg8
        • 2.Ra6#
      • 1...b6
        • 2.Scd6#
      • 1...Bb6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(b);P_SPINP(e)::R(F)
    • Q(b);P_SPINP(e),XR(E)::R(F)
    • B(d);N_GUARD::S(G)
    • B(d);N_GUARD::S(G),XB(d)
  • Actual
    • R(E);
    • Threat
      • R(E)+S(G),DCHECK
    • Vars
      • Q(b);P_SPINP(e),XR(E)::R(F)
      • P(e);P_SPINQ(b),S_CUTB(d)::R(E)+S(G)
      • B(d);::R(E)+S(G),DCHECK,XB(d)
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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).