MESON Chess Problem Database

Problem Display
PID: 139983 (B2b4/2p3rR/2R3p1/K2N3r/5Pp1/8/8/5QBk w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

The Problemist, 1938

B2b4/2p3rR/2R3p1/K2N3r/5Pp1/8/8/5QBk

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rh2
      • 2.Bf2#
      • 2.Bxh2#
      • 2.Be3#
      • 2.Bd4#
      • 2.Bc5#
      • 2.Bb6#
      • 2.Ba7#
      • 2.Rxh2#
    • 1...g5
      • 2.Rxh5#
  • Tries
    • 1.Rxh5+?
      • 1...Bh4
        • 2.Rxh4#
      • 1...gxh5!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Bh2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Bb6#
        • 2.Ba7#
        • 2.Qg2#
      • 1...c5+
        • 2.Sc7#
      • 1...c6+
        • 2.Bb6#
      • 1...Rh2
        • 2.Sxc7#
        • 2.Bf2#
        • 2.Bxh2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Bb6#
        • 2.Ba7#
        • 2.Rcxh2#
        • 2.Rhxh2#
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD,N_PINS(E),S_CUTB(g)::R(G),XR(c)
  • Tries
    • Try
      • R(G);CHECK,N_SPINS(E),XR(c)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::R(G),XB(g)
      • Refutation
        • P(d);XR(G)
  • Actual
    • R(F);
    • Threat
      • DUALS(7)
    • Vars
      • P(e);CHECK,N_PINS(E)::B(H)+S(E)
      • P(e);CHECK::QAR(A)+B(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).