MESON Chess Problem Database

Problem Display
PID: 205542 (8/5p2/5K2/4P3/8/6kp/3Q3N/8 w - - 0 1)

Schonberger, Tibor

L'Echiquier Marseillais, 1925

8/5p2/5K2/4P3/8/6kp/3Q3N/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4
      • 2.Qg5#
  • Tries
    • 1.Kf5?
      • 1...Kh4
        • 2.Qg5#
      • 1...f6!
    • 1.e6?
      • 1...Kh4
        • 2.Qg5#
      • 1...fxe6!
  • Keys
    • 1.Qe2!
      • 1...Kf4
        • 2.Qf3#
      • 1...Kh4
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);XP(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(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).