MESON Chess Problem Database

Problem Display
PID: 78896 (8/4Bb2/8/5NQ1/2pP1NR1/2kp1n2/3p2q1/K2B4 w - - 0 1)

Commandeur, Henri

L'Echiquier de Paris, 1955

8/4Bb2/8/5NQ1/2pP1NR1/2kp1n2/3p2q1/K2B4

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sxd5#
    • 1...Bh5
      • 2.Sd5#
    • 1...Bg6
      • 2.Sd5#
    • 1...Be8
      • 2.Sd5#
  • Tries
    • 1.Se2+?
      • 1...dxe2
        • 2.Qe3#
      • 1...Qxe2!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sb5#
      • 1...Kb4
        • 2.Se4#
      • 1...Kxd4
        • 2.Se2#
      • 1...Sxd4
        • 2.Qa5#
      • 1...Be8
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(g);N_GUARD::S(D),XB(g)
    • B(g);N_GUARD::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • P(d);S_CUTQ(b),XS(D)::QAR2(G)
      • Refutation
        • Q(b);XS(D)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(c);S_FLIGHT::B(H)+S(F)
      • K(c);S_FLIGHT,XP(C)::R(E)+S(D),DCHECK
      • S(e);SBLOCK,XP(C)::QAB(G)
      • B(g);N_GUARD::S(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).