MESON Chess Problem Database

Problem Display
PID: 2085 (3Q4/3p1p2/2b1k3/R7/4P3/4P3/K7/5r1q w - - 0 1)

Brieger, Robert A

Source?, 0000

3Q4/3p1p2/2b1k3/R7/4P3/4P3/K7/5r1q

#2

5 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qe8+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kf6!
  • Keys
    • 1.Re5+!
      • 1...Kxe5
        • 2.Qe7#
      • 1...Kd6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAB1(E)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • R(D);CHECK
    • Vars
      • K(d);P-FLIGHT,XR(D)::QAR2(E)
      • K(d);P-FLIGHT,P_SPINP(e)::QAB(E)
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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).