MESON Chess Problem Database

Problem Display
PID: 187262 (1n6/K3P1N1/pPk2P2/p7/b1pPN3/1pP5/1P5B/Q7 w - - 0 1)

Petite, Efren

2nd HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1996-1997

1n6/K3P1N1/pPk2P2/p7/b1pPN3/1pP5/1P5B/Q7

#2

11 + 7

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.e8Q#
  • Tries
    • 1.Sc5?
      • 1...Kb5
        • 2.Qxa4#
      • 1...Kd5
        • 2.Qh1#
      • 1...Bb5
        • 2.Qh1#
      • 1...Sd7!
    • 1.Sd6?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7
        • 2.e8Q#
      • 1...Sd7
        • 2.Qh1#
      • 1...Bb5!
    • 1.e8Q+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Sd7!
  • Keys
    • 1.Qh1!
      • 1...Kb5
        • 2.Sd6#
      • 1...Kd5
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
      • 1...Kd7
        • 2.e8Q#
      • 1...Bb5
        • 2.Sc5#
      • 1...Sd7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(f);S_FLIGHT::P=Q
  • Tries
    • Try
      • S(F);
      • Vars
        • K(f);S_FLIGHT::QAB1(A),XB(b)
        • K(f);S_FLIGHT::QAB(A)
        • B(b);SBLOCK::QAB(A)
      • Refutation
        • S(g);
    • Try
      • S(F);
      • Vars
        • K(f);S_FLIGHT::QAB(A)
        • K(f);S_FLIGHT::P=Q
        • S(g);SBLOCK::QAB(A)
      • Refutation
        • B(b);
    • Try
      • P(J);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB1(J)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • Q(A);
    • Vars
      • K(f);S_FLIGHT::S(F)
      • K(f);S_FLIGHT::P=Q
      • B(b);SBLOCK::QAB(A)+S(F)
      • S(g);SBLOCK::QAB(A)+S(F)
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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).