MESON Chess Problem Database

Problem Display
PID: 186045 (6Q1/b7/3p1p2/R1npk3/R3Pn2/5p2/BN1P4/rb4BK w - - 0 1)

Petite, Efren

Chess, 1958

6Q1/b7/3p1p2/R1npk3/R3Pn2/5p2/BN1P4/rb4BK

#2

9 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Qe8+?
      • 1...Sfe6
        • 2.Bh2#
      • 1...Sce6!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qf5#
      • 1...Bxe4
        • 2.d4#
      • 1...Sxe4
        • 2.Sc4#
      • 1...dxe4
        • 2.Bd4#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • S(d);P_SPINS(d),S_CUTS(e)::B(A)
      • Refutation
        • S(e);P_SPINP(f),P_SPINS(e)
  • Actual
    • Q(I);
    • Threat
      • QAR1(I)
    • Vars
      • B(b);P_PINB(A),SBLOCK,XP(G)::P(E)
      • S(e);P_SPINP(f),SBLOCK,XP(G)::S(D)
      • P(f);P_SPINS(e),SBLOCK,XP(G)::B(A)
      • P(i);::QAR1(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).