Problem Display
PID: 231909 (R7/1k6/8/8/4K3/8/8/5R2 w - - 0 1)

Dreike, Franz

Ascher Zeitung, 1937

R7/1k6/8/8/4K3/8/8/5R2

#4

3 + 1


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Keys
    • 1.Kd5!
      • threat
        • 2.Kc5
          • threat
            • 3.Rfa1
              • 3...Kc7
                • 4.R1a7#
            • 3.Rff8
              • 3...Kc7
                • 4.Ra7#
                • 4.Rf7#
          • 2...Kxa8
            • 3.Kb6
              • 3...Kb8
                • 4.Rf8#
        • 2.Kd6
          • threat
            • 3.Rfa1
              • 3...Kb6
                • 4.Rb1#
                • 4.Rb8#
            • 3.Rff8
              • 3...Kb6
                • 4.Rfb8#
          • 2...Kxa8
            • 3.Kc7
              • 3...Ka7
                • 4.Ra1#
        • 2.Rfa1
          • threat
            • 3.Kc5
              • 3...Kc7
                • 4.R1a7#
            • 3.Kd6
              • 3...Kb6
                • 4.Rb1#
                • 4.Rb8#
          • 2...Kb6
            • 3.R1a7
              • 3...Kb5
                • 4.Rb7#
                • 4.Rb8#
            • 3.R8a7
              • 3...Kb5
                • 4.Rb1#
                • 4.Rb7#
          • 2...Kc7
            • 3.Rb1
              • 3...Kd7
                • 4.Rb7#
        • 2.Rff8
          • threat
            • 3.Kc5
              • 3...Kc7
                • 4.Ra7#
                • 4.Rf7#
            • 3.Kd6
              • 3...Kb6
                • 4.Rfb8#
          • 2...Kb6
            • 3.Rf7
              • 3...Kb5
                • 4.Rb7#
          • 2...Kc7
            • 3.Rab8
              • 3...Kd7
                • 4.Rb7#
                • 4.Rf7#
            • 3.Rfb8
              • 3...Kd7
                • 4.Ra7#
                • 4.Rb7#
      • 1...Kxa8
        • 2.Kc6
          • threat
            • 3.Kb6
              • 3...Kb8
                • 4.Rf8#
            • 3.Kc7
              • 3...Ka7
                • 4.Ra1#
          • 2...Ka7
            • 3.Rf8
              • 3...Ka6
                • 4.Ra8#
          • 2...Kb8
            • 3.Ra1
              • 3...Kc8
                • 4.Ra8#

This is a version of 231894

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).