MESON Chess Problem Database

Problem Display
PID: 183328 (5R2/3r4/2N1Pnp1/p3BnpB/K1Q3r1/1p1p1kpq/3R4/1b1N4 w - - 0 1)

Clark, Cecil Henry Douglas

The Problemist, 1943

5R2/3r4/2N1Pnp1/p3BnpB/K1Q3r1/1p1p1kpq/3R4/1b1N4

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Rf2#
  • Keys
    • 1.Bd6!
      • threat
        • 2.Se5#
      • 1...Sd4
        • 2.Qd5#
      • 1...Se4
        • 2.Sd4#
      • 1...g2
        • 2.Rf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::R1(B)
  • Actual
    • B(E);
    • Threat
      • S(G)
    • Vars
      • S(i);N_PINQ(D),P_SPINS(k)::QAB(D)
      • S(k);N_PINQ(D),P_SPINS(i),SBLOCK::S(G)
      • P(e);N_GUARD::R1(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).