MESON Chess Problem Database

Problem Display
PID: 85712 (4Q3/4P3/2P1k3/6P1/3K2P1/8/8/8 w - - 0 1)

Speckmann, Werner

Rochade Europa, 1989

4Q3/4P3/2P1k3/6P1/3K2P1/8/8/8

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd7#
  • Tries
    • 1.g6?
      • 1...Kd6
        • 2.Qd7#
      • 1...Kf6!
  • Keys
    • 1.Qd7+!
      • 1...Kf7
        • 2.e8Q#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR1(F)
  • Tries
    • Try
      • P(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(F);CHECK
    • Vars
      • K(a);S_FLIGHT::P=Q
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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).