MESON Chess Problem Database

Problem Display
PID: 231094 (k1KQ4/P7/8/1p6/1P6/8/8/8 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1927

k1KQ4/P7/8/1p6/1P6/8/8/8

#2

4 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa7
      • 2.Qa5#
  • Tries
    • 1.Kd7+?
      • 1...Kb7
        • 2.a8Q#
      • 1...Kxa7!
  • Keys
    • 1.Qd5+!
      • 1...Kxa7
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(D)
  • Tries
    • Try
      • K(C);CHECK,S_FLIGHT
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(b);P-FLIGHT,XP(B)
  • Actual
    • Q(D);CHECK
    • Vars
      • K(b);P-FLIGHT,XP(B)::QAR1(D)
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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).