MESON Chess Problem Database

Problem Display
PID: 137625 (4B3/1p1Pp3/6r1/PQ2KpPk/pP1PNBpp/p3p3/5PNP/8 w - f5 0 1)

Gandy, Jean-Claude

Nouguier, Henri

diagrammes, 1975

4B3/1p1Pp3/6r1/PQ2KpPk/pP1PNBpp/p3p3/5PNP/8

#2

13 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qe2#
    • 1...h3
      • 2.Sg3#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Bxe3?
      • threat
        • 2.Sf4#
      • 1...g3
        • 2.Qe2#
      • 1...h3
        • 2.Sg3#
      • 1...f4
        • 2.Sxf4#
      • 1...fxe4!
    • 1.Qb6?
      • threat
        • 2.Bxg6#
        • 2.Qxg6#
      • 1...e6
        • 2.Sf6#
      • 1...g3!
  • Keys
    • 1.gxf5 ep!
      • threat
        • 2.Ke6#
      • 1...exf6+
        • 2.Sxf6#
      • 1...g3
        • 2.Qe2#
      • 1...e6
        • 2.Kxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(d);OGATEB::QAB(I)
    • P(e);N_GUARD::S(F)
    • P(j);N_GUARD::S(F)
  • Tries
    • Try
      • B(G);XP(b)
      • Threat
        • S(B)
      • Vars
        • P(d);OGATEB::QAB(I)
        • P(e);N_GUARD::S(F)
        • P(f);::S(B),XP(f)
      • Refutation
        • P(f);XS(F)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(j);N_GUARD::S(F)
      • Refutation
        • P(d);
  • Actual
    • P(K);EP,XP(f)
    • Threat
      • QAR(I)+K(J)
    • Vars
      • P(j);CHECK,XP(K)::S(F),XP(j)
      • P(d);OGATEB::QAB(I)
      • P(j);::QAR(I)+K(J),XP(j)
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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).