Problem Display
PID: 92973 (1N6/R6p/7K/1NP1k3/8/3p4/3P2PP/8 w - - 0 1)

Herland, Sigmund

Tidskrift for Schack, 1907

1N6/R6p/7K/1NP1k3/8/3p4/3P2PP/8

#4

8 + 3


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Sc7!
      • 1...Kd4
        • 2.Sd7
          • threat
            • 3.Ra4#
          • 2...Kc4
            • 3.Rb7
              • 3...Kd4
                • 4.Rb4#
          • 2...Ke4
            • 3.Ra4+
              • 3...Kf5
                • 4.g4#
      • 1...Ke4
        • 2.Ra4+
          • 2...Ke5
            • 3.Sd7+
              • 3...Kf5
                • 4.g4#
          • 2...Kf5
            • 3.Sc6
              • 3...Kf6
                • 4.Rf4#
      • 1...Kf4
        • 2.Ra4+
          • 2...Ke5
            • 3.Sd7+
              • 3...Kf5
                • 4.g4#
          • 2...Kf5
            • 3.Sc6
              • 3...Kf6
                • 4.Rf4#
      • 1...Kf5
        • 2.Sd7
          • 2...Ke4
            • 3.Ra4+
              • 3...Kf5
                • 4.g4#
          • 2...Kf4
            • 3.Ra4+
              • 3...Kf5
                • 4.g4#
          • 2...Kg4
            • 3.Ra4+
              • 3...Kf5
                • 4.g4#
      • 1...Kf6
        • 2.Sc6
          • 2...Kf5
            • 3.Ra4
              • 3...Kf6
                • 4.Rf4#
          • 2...Kf7
            • 3.Ra8
              • 3...Kf6
                • 4.Rf8#

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).