Problem Display
PID: 186394 (8/4k3/2B5/R3K3/8/8/8/8 w - - 0 1)

Shinkman, William Anthony

La Strategie, 1910

8/4k3/2B5/R3K3/8/8/8/8

#4

3 + 1


6490 yacpdb 2018

SOLUTION


  • COOKED
  • Keys
    • 1.Be8!
      • threat
        • 2.Ra8
          • 2...Kf8
            • 3.Kf6
              • 3...Kg8
                • 4.Bg6#
      • 1...Kd8
        • 2.Kd6
          • threat
            • 3.Ra8#
          • 2...Kc8
            • 3.Bc6
              • threat
                • 4.Ra8#
              • 3...Kb8
                • 4.Ra8#
              • 3...Kd8
                • 4.Ra8#
            • 3.Rb5
              • 3...Kd8
                • 4.Rb8#
          • 2...Kxe8
            • 3.Rf5
              • 3...Kd8
                • 4.Rf8#
      • 1...Kxe8
        • 2.Ke6
          • threat
            • 3.Ra8#
          • 2...Kd8
            • 3.Rc5
              • 3...Ke8
                • 4.Rc8#
          • 2...Kf8
            • 3.Rg5
              • 3...Ke8
                • 4.Rg8#
      • 1...Kf8
        • 2.Kf6
          • threat
            • 3.Bg6
              • 3...Kg8
                • 4.Ra8#
            • 3.Ra8
              • 3...Kg8
                • 4.Bg6#
          • 2...Kxe8
            • 3.Rd5
              • 3...Kf8
                • 4.Rd8#
          • 2...Kg8
            • 3.Bf7+
              • 3...Kh7
                • 4.Rh5#
              • 3...Kf8
                • 4.Ra8#
              • 3...Kh8
                • 4.Rh5#
            • 3.Bg6
              • threat
                • 4.Ra8#
              • 3...Kf8
                • 4.Ra8#
              • 3...Kh8
                • 4.Ra8#
            • 3.Rh5
              • 3...Kf8
                • 4.Rh8#
    • 1.Ra7+!
      • 1...Kf8
        • 2.Kf6
          • 2...Kg8
            • 3.Be4
              • threat
                • 4.Ra8#
              • 3...Kf8
                • 4.Ra8#
              • 3...Kh8
                • 4.Ra8#

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).