Problem Display
PID: 26194 (5K2/5N2/5k2/8/5N1R/8/8/8 w - - 0 1)

Grupen, Claus

Problem Observer, 2001

5K2/5N2/5k2/8/5N1R/8/8/8

#4

4 + 1


SOLUTION


  • SOUND
  • Keys
    • 1.Sg2!
      • threat
        • 2.Se3
          • threat
            • 3.Rh6#
          • 2...Ke6
            • 3.Rd4
              • 3...Kf6
                • 4.Rd6#
      • 1...Kf5
        • 2.Se3+
          • 2...Ke6
            • 3.Rd4
              • 3...Kf6
                • 4.Rd6#
      • 1...Ke6
        • 2.Rd4
          • threat
            • 3.Se3
              • 3...Kf6
                • 4.Rd6#
            • 3.Sh4
              • 3...Kf6
                • 4.Rd6#
          • 2...Kf5
            • 3.Sh4+
              • 3...Ke6
                • 4.Rd6#
              • 3...Kf6
                • 4.Rd6#
          • 2...Kf6
            • 3.Sh4
              • 3...Ke6
                • 4.Rd6#

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).