MESON Chess Problem Database

Problem Display
PID: 42839 (8/2Q5/3p1k2/1N3B2/6K1/8/8/8 w - - 0 1)

Papic, Ljubisa

Mat, 1976

8/2Q5/3p1k2/1N3B2/6K1/8/8/8

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qxd6#
  • Tries
    • 1.Qa7?
      • 1...Ke5
        • 2.Qd4#
      • 1...d5!
    • 1.Qd7?
      • 1...Ke5
        • 2.Qe6#
        • 2.Qxd6#
      • 1...d5!
    • 1.Qf7+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxf7!
  • Keys
    • 1.Sc3!
      • 1...Ke5
        • 2.Qg7#
      • 1...d5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(a),S_FLIGHT::QAB1(D),XP(a)
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • P(a);
    • Try
      • Q(D);
      • Refutation
        • P(a);
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(D)
  • Actual
    • S(B);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB(D)
      • P(a);::S(B),XP(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).