MESON Chess Problem Database

Problem Display
PID: 101642 (1Q6/n3N1pK/2P4R/R1b1PN2/5kpP/3np1p1/1r4B1/B7 w - - 0 1)

Lepage, Roger

1st Prize, diagrammes, 1973

1Q6/n3N1pK/2P4R/R1b1PN2/5kpP/3np1p1/1r4B1/B7

#2

11 + 9

274 diagrammes 1974
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sg6#
      • 1...Kxe5
        • 2.Sdf5#
      • 1...Rxg2
        • 2.Qf8#
      • 1...Bxd6
        • 2.Qf8#
      • 1...Sxe5
        • 2.Sd5#
      • 1...g6
        • 2.Sxg6#
      • 1...e2!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Sg6#
      • 1...Kxe5
        • 2.Qb8#
      • 1...Rxg2
        • 2.Sd6#
      • 1...Bxe7
        • 2.Sxe7#
      • 1...Sxe5
        • 2.Sd5#
      • 1...g6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • S(I)
      • Vars
        • K(e);P_SPINB(g),P_SPINR(a),S_FLIGHT,XP(E)::QAB(K)+S(F)
        • R(a);XB(B)::QAR(K)
        • B(g);XS(F)::QAR(K)
        • S(b);SBLOCK,XP(E)::S(I)
        • P(i);::S(I),XP(i)
      • Refutation
        • P(c);
  • Actual
    • Q(K);
    • Threat
      • S(I)
    • Vars
      • K(e);OGATEB,P_SPINB(g),P_SPINR(a),S_FLIGHT,XP(E)::QAB(K)
      • R(a);XB(B)::QAR(K)+S(F)
      • B(g);XS(I)::QAR(K)+S(F),XB(g)
      • S(b);SBLOCK,XP(E)::S(I)
      • P(i);::S(I),XP(i)
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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).