MESON Chess Problem Database

Problem Display
PID: 99667 (8/5Q2/8/8/6k1/5N2/5K2/8 w - - 0 1)

Lazard, Frederic

Schonberger, Tibor

Magyar Sakkvilag, 1926

8/5Q2/8/8/6k1/5N2/5K2/8

#2

3 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qh5#
      • 2.Qe6#
      • 2.Qf5#
      • 2.Qd7#
  • Tries
    • 1.Qd5?
      • 1...Kh3
        • 2.Qe6#
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qd7#
      • 1...Kf4!
    • 1.Qg6+?
      • 1...Kh3
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qg2#
        • 2.Qg3#
        • 2.Qe6#
      • 1...Kf4!
    • 1.Qf4+?
      • 1...Kh3
        • 2.Sg1#
        • 2.Sg5#
        • 2.Qg3#
        • 2.Qh4#
        • 2.Qf5#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kxf4!
    • 1.Qf8?
      • 1...Kh3
        • 2.Qf5#
        • 2.Qc8#
      • 1...Kh5!
  • Keys
    • 1.Qf6!
      • 1...Kh3
        • 2.Qh4#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Kh5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
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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).