Problem Display
PID: 230865 (4K3/8/2kpN3/p7/P7/1PNR4/8/8 w - - 0 1)

Beckers, Franz

Tidskrift for Schack, 1913

4K3/8/2kpN3/p7/P7/1PNR4/8/8

#4

6 + 3


SOLUTION


  • SOUND
  • Keys
    • 1.Sb5!
      • threat
        • 2.Rxd6+
          • 2...Kb7
            • 3.Sc5+
              • 3...Ka8
                • 4.Rd8#
              • 3...Kb8
                • 4.Rd8#
              • 3...Kc8
                • 4.Rd8#
      • 1...Kb6
        • 2.Rxd6+
          • 2...Kb7
            • 3.Sc5+
              • 3...Ka8
                • 4.Rd8#
              • 3...Kb8
                • 4.Rd8#
              • 3...Kc8
                • 4.Rd8#
      • 1...Kb7
        • 2.Rxd6
          • threat
            • 3.Sc5+
              • 3...Ka8
                • 4.Rd8#
              • 3...Kb8
                • 4.Rd8#
              • 3...Kc8
                • 4.Rd8#
          • 2...Ka8
            • 3.Sc5
              • 3...Kb8
                • 4.Rd8#
          • 2...Kb8
            • 3.Rb6+
              • 3...Ka8
                • 4.Sec7#
              • 3...Kc8
                • 4.Sd6#
                • 4.Sa7#
            • 3.Sc5
              • threat
                • 4.Rd8#
              • 3...Ka8
                • 4.Rd8#
              • 3...Kc8
                • 4.Rd8#
          • 2...Kc8
            • 3.Sc5
              • 3...Kb8
                • 4.Rd8#
      • 1...d5
        • 2.Sd8+
          • 2...Kc5
            • 3.Rc3+
              • 3...Kb4
                • 4.Sc6#
              • 3...Kb6
                • 4.Rc6#
          • 2...Kb6
            • 3.Rxd5
              • 3...Ka6
                • 4.Rd6#
            • 3.Rc3
              • threat
                • 4.Rc6#
              • 3...Ka6
                • 4.Rc6#

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).