MESON Chess Problem Database

Problem Display
PID: 176163 (6K1/2bk4/8/8/7B/8/4Q3/7B w - - 0 1)

Forst, Eugen

Schach-Echo, 1956

6K1/2bk4/8/8/7B/8/4Q3/7B

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qe7#
  • Tries
    • 1.Qg4+?
      • 1...Ke8
        • 2.Bc6#
        • 2.Qe6#
        • 2.Qa4#
      • 1...Kd6!
    • 1.Qb5+?
      • 1...Kd6
        • 2.Qd5#
      • 1...Ke6
        • 2.Qd5#
      • 1...Kc8!
  • Keys
    • 1.Qe8+!
      • 1...Kd6
        • 2.Qe7#
      • 1...Kxe8
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);CHECK
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT,XQ(B)::B(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).