MESON Chess Problem Database

Problem Display
PID: 138976 (4nQNB/2pP1pPk/2Pp1R1P/3PpKpp/5NPb/3B2P1/P7/8 w - e5 0 1)

Benedek, Attila

2nd Prize, BCF 122. Ty., 1969-1970

4nQNB/2pP1pPk/2Pp1R1P/3PpKpp/5NPb/3B2P1/P7/8

#2

15 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sxg7+
      • 2.Qxg7#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qg8#
        • 2.g8Q#
      • 1...Sxg7+
        • 2.Qxg7#
      • 1...Sxf6!
  • Keys
    • 1.dxe5 ep!
      • 1...Sxg7+
        • 2.Qxg7#
      • 1...fxe6+
        • 2.Kxe6#
      • 1...Bxg3
        • 2.Kxg5#
      • 1...Sxf6
        • 2.Kxf6#
      • 1...gxf4
        • 2.Kxf4#
      • 1...hxg4
        • 2.Kxg4#
      • 1...d5
        • 2.Ke5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(i);CHECK,OGATE,XP(L)::QAR1(M),XS(i)
  • Tries
    • Try
      • S(N);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);CHECK,OGATE,XP(L)::QAR1(M),XS(i)
      • Refutation
        • S(i);XR(I)
  • Actual
    • P(F);EP,XP(b)
    • Vars
      • S(i);CHECK,OGATE,XP(L)::QAR1(M),XS(i)
      • P(g);CHECK,XP(F)::B(B)+K(G),XP(g)
      • B(a);XP(C)::B(B)+K(G),XP(c)
      • S(i);XR(I)::B(B)+K(G),XS(i)
      • P(c);XS(D)::B(B)+K(G),XP(c)
      • P(d);XP(E)::B(B)+K(G),XP(d)
      • P(e);::B(B)+K(G)
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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).