MESON Chess Problem Database

Problem Display
PID: 77905 (4K2Q/5N2/8/5pNP/6bk/4P3/8/6R1 w - - 0 1)

Zalkind, Lazar Borissovich

Narodni osvobozeni, 1930

4K2Q/5N2/8/5pNP/6bk/4P3/8/6R1

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Sf3#
  • Tries
    • 1.Sf3+?
      • 1...Kh3
        • 2.S7g5#
      • 1...Bxf3!
  • Keys
    • 1.Se5!
      • 1...Bxh5+
        • 2.Sg6#
      • 1...Kxg5
        • 2.Sf3#
      • 1...Bd1
        • 2.Sg6#
      • 1...Be2
        • 2.Sg6#
      • 1...Bf3
        • 2.Sexf3#
        • 2.Sg6#
      • 1...Bh3
        • 2.Sef3#
        • 2.Sg6#
        • 2.Sgf3#
      • 1...f4
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD,SBLOCK::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::S(E)
      • Refutation
        • B(a);XS(C)
  • Actual
    • S(E);
    • Vars
      • B(a);CHECK,P_SPINB(a),XP(D)::S(E)
      • K(b);P_SPINB(a),S_FLIGHT,XS(C)::S(E)
      • B(a);::S(E)
      • P(c);N_GUARD::R1(A),XB(a)
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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).