MESON Chess Problem Database

Problem Display
PID: 238913 (3b4/2R5/2P1p3/2p1k1PK/2p1B1p1/2N3N1/1Q6/6B1 w - - 0 1)

Petite, Efren

Il Due Mosse, 1960

3b4/2R5/2P1p3/2p1k1PK/2p1B1p1/2N3N1/1Q6/6B1

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sce2#
    • 1...Kd6
      • 2.Sb5#
  • Tries
    • 1.Sce2+?
      • 1...Kd6
        • 2.Rd7#
      • 1...c3!
  • Keys
    • 1.Qb8!
      • 1...Kf4
        • 2.Rf7#
      • 1...Kd6
        • 2.Rd7#
      • 1...Bxg5
        • 2.Rf7#
      • 1...Bxc7
        • 2.Qxc7#
      • 1...Bf6
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Rc8#
      • 1...Be7
        • 2.Rxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);S_FLIGHT::R1(I)
      • Refutation
        • P(a);P_SPINP(a)
  • Actual
    • Q(B);
    • Vars
      • K(d);S_FLIGHT::QAB(B)+R(I),DCHECK
      • B(f);N_GUARD,XP(F)::QAB(B)+R(I)
      • B(f);OGATE,P_SPINB(f),XR(I)::QAB(B),XB(f)
      • B(f);N_GUARD::QAB(B)+R(I),XB(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).