MESON Chess Problem Database

Problem Display
PID: 231564 (6KR/4k2P/2Q2p2/5P2/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

6KR/4k2P/2Q2p2/5P2/8/8/8/8

#2

5 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Kf7#
  • Tries
    • 1.Qb7+?
      • 1...Kd8
        • 2.Kf7#
        • 2.Kg7#
      • 1...Ke8
        • 2.Kg7#
      • 1...Kd6!
    • 1.Qd6+?
      • 1...Ke8
        • 2.Kg7#
      • 1...Kxd6!
  • Keys
    • 1.Qc7+!
      • 1...Ke8
        • 2.Kg7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::R(E)+K(D)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::R(E)+K(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::R(E)+K(D)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);CHECK
    • Vars
      • K(b);P-FLIGHT::R(E)+K(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).