Problem Display
PID: 75869 (4N3/2pN4/2k5/1p6/1K6/7B/6P1/7R w - - 0 1)

Grupen, Claus

Problem Observer, 2008

4N3/2pN4/2k5/1p6/1K6/7B/6P1/7R

#4

6 + 3


SOLUTION


  • SOUND
  • Keys
    • 1.Sc5!
      • threat
        • 2.Be6
          • 2...Kb6
            • 3.Ra1
              • threat
                • 4.Ra6#
              • 3...Kc6
                • 4.Ra6#
      • 1...Kd5
        • 2.Be6+
          • 2...Kd4
            • 3.Re1
              • 3...c6
                • 4.Re4#
          • 2...Ke5
            • 3.Rh4
              • 3...c6
                • 4.Re4#
          • 2...Kc6
            • 3.Ra1
              • 3...Kb6
                • 4.Ra6#
      • 1...Kb6
        • 2.Ra1
          • threat
            • 3.Ra6#
          • 2...Kc6
            • 3.Be6
              • 3...Kb6
                • 4.Ra6#

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).