MESON Chess Problem Database

Problem Display
PID: 93220 (2N5/2b1BknK/3P4/4R3/B7/8/8/8 w - - 0 1)

Ljubomir, AM

Arbejder-Skak, 1960

2N5/2b1BknK/3P4/4R3/B7/8/8/8

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Sxd6#
    • 1...Se6
      • 2.Rf5#
    • 1...Se8
      • 2.Bb3#
  • Tries
    • 1.dxc7?
      • threat
        • 2.Sd6#
      • 1...Se6
        • 2.Rf5#
      • 1...Se8
        • 2.Bb3#
      • 1...Sf5!
  • Keys
    • 1.d7!
      • 1...Bxe5
        • 2.d8S#
      • 1...Ba5
        • 2.Sd6#
      • 1...Bb6
        • 2.Sd6#
      • 1...Bd6
        • 2.Sxd6#
        • 2.d8S#
      • 1...Bb8
        • 2.d8S#
      • 1...Bd8
        • 2.Sd6#
      • 1...Sf5
        • 2.Bb3#
      • 1...Sh5
        • 2.Bb3#
      • 1...Se6
        • 2.Rf5#
      • 1...Se8
        • 2.Bb3#
        • 2.dxe8Q#
        • 2.dxe8B#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • B(a);XP(C)::S(F),XB(a)
    • S(c);N_GUARD,SBLOCK::R(B)
    • S(c);N_GUARD,SBLOCK::B(A)
  • Tries
    • Try
      • P(C);XB(a)
      • Threat
        • S(F)
      • Vars
        • S(c);N_GUARD,SBLOCK::R(B)
        • S(c);N_GUARD,SBLOCK::B(A)
      • Refutation
        • S(c);
  • Actual
    • P(C);
    • Vars
      • B(a);N_GUARD,XR(B)::P=S
      • B(a);N_GUARD::S(F)
      • B(a);N_GUARD::P=S
      • S(c);N_GUARD::B(A)
      • S(c);N_GUARD,SBLOCK::R(B)
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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).