MESON Chess Problem Database

Problem Display
PID: 227542 (4QK2/8/7k/6p1/6p1/6P1/8/8 w - - 0 1)

Lazard, Frederic

Magyar Sakkvilag, 1926

4QK2/8/7k/6p1/6p1/6P1/8/8

#2

3 + 3

6490 yacpdb 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kh7
      • 2.Qh5#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Qh8#
      • 1...Kh5
        • 2.Kg7#
        • 2.Qh8#
      • 1...Kh7!
    • 1.Qd7?
      • 1...Kh5
        • 2.Qh7#
      • 1...Kg6!
    • 1.Qe7?
      • 1...Kh5
        • 2.Qh7#
      • 1...Kg6!
  • Keys
    • 1.Qe4!
      • 1...Kh5
        • 2.Qh7#

This anticipates 218850(1987)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::QAR2(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);P-FLIGHT::QAR2(B)
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).