MESON Chess Problem Database

Problem Display
PID: 44321 (3R4/2pKp3/8/3k4/N1pp2N1/3p1P2/B2P4/8 w - - 0 1)

de Thomaz, R

1st Prize=, Bulletin de l'AJEC, 1941

3R4/2pKp3/8/3k4/N1pp2N1/3p1P2/B2P4/8

#2

7 + 6

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1948
785 Het Belgisch Schaakbord (L'Echiquier Belge) 1952
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Sb6#
    • 1...c6
      • 2.Kxe7#
    • 1...e5
      • 2.Sf6#
    • 1...e6
      • 2.Kxc7#
  • Tries
    • 1.Bb3?
      • 1...c6
        • 2.Kxe7#
      • 1...c5
        • 2.Sb6#
      • 1...e5
        • 2.Sf6#
      • 1...e6
        • 2.Kxc7#
      • 1...cxb3!
  • Keys
    • 1.Bb1!
      • 1...c3
        • 2.Ba2#
      • 1...c6
        • 2.Kxe7#
      • 1...c5
        • 2.Sb6#
      • 1...e5
        • 2.Sf6#
      • 1...e6
        • 2.Kxc7#

This anticipates 162990(1970)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD,SBLOCK::S(D)
    • P(e);SBLOCK::R(G)+K(F),XP(f)
    • P(f);N_GUARD,SBLOCK::S(E)
    • P(f);SBLOCK::R(G)+K(F),XP(e)
  • Tries
    • Try
      • B(A);
      • Vars
        • P(e);SBLOCK::R(G)+K(F),XP(f)
        • P(e);N_GUARD,SBLOCK::S(D)
        • P(f);N_GUARD,SBLOCK::S(E)
        • P(f);SBLOCK::R(G)+K(F),XP(e)
      • Refutation
        • P(b);N_SPINP(b),XB(A)
  • Actual
    • B(A);N_PINP(b)
    • Vars
      • P(b);OGATEB::B(A)
      • P(e);SBLOCK::R(G)+K(F),XP(f)
      • P(e);N_GUARD,SBLOCK::S(D)
      • P(f);N_GUARD,SBLOCK::S(E)
      • P(f);SBLOCK::R(G)+K(F),XP(e)
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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).