MESON Chess Problem Database

Problem Display
PID: 7592 (2n1k1N1/7K/4N3/3P4/4Q3/8/8/8 w - - 0 1)

Navon, Emanuel

The Problemist, 1991

2n1k1N1/7K/4N3/3P4/4Q3/8/8/8

#2

5 + 2

2838 Fun with Chess Miniatures 1996
145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Qg6#
  • Tries
    • 1.Qb4?
      • 1...Kd7
        • 2.Sf6#
      • 1...Kf7
        • 2.Qf8#
      • 1...Sb6
        • 2.Qe7#
      • 1...Sa7
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...Sd6!
  • Keys
    • 1.Qh4!
      • 1...Kd7
        • 2.Qd8#
      • 1...Kf7
        • 2.Qh5#
      • 1...Sb6
        • 2.Qe7#
      • 1...Sd6
        • 2.Qe7#
      • 1...Sa7
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::S(E)
        • K(b);S_FLIGHT::QAR1(A)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::QAB(A)
      • S(a);N_GUARD::QAR1(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
HTML5 logo

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).