Problem Display
PID: 255581 (8/8/2Q1P3/3p4/3kpB2/4p3/4K3/8 w - - 0 1)

Keller, Kurt

Problemist Ukraini, 2021

8/8/2Q1P3/3p4/3kpB2/4p3/4K3/8

#4

4 + 4


SOLUTION


  • SOUND
  • Keys
    • 1.Kd1!
      • threat
        • 2.Kc2
          • 2...e2
            • 3.Qc3#
      • 1...e2+
        • 2.Kxe2
          • 2...e3
            • 3.Qc7
              • 3...Ke4
                • 4.Qe5#
      • 1...Kd3
        • 2.Qb5+
          • 2...Kc3
            • 3.Bxe3
              • 3...d4
                • 4.Bd2#
          • 2...Kd4
            • 3.Kc2
              • 3...e2
                • 4.Qb4#

FEATURES


NOT CLASSIFIED


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).