Problem Display
PID: 62374 (1k5q/2p5/4p2r/2NbQ3/B7/2r1b3/1P3n2/R2n1KNR w - - 0 1)

Anonymous

Schachzeitung der Berliner Schachgesellschaft, 1853

1k5q/2p5/4p2r/2NbQ3/B7/2r1b3/1P3n2/R2n1KNR

#4

8 + 10


SOLUTION


  • SOUND
  • Keys
    • 1.Qxd5!
      • threat
        • 2.Qb7#
      • 1...Rxc5
        • 2.Qa8+
          • 2...Kxa8
            • 3.Bc6+
              • 3...Kb8
                • 4.Ra8#
      • 1...Bxc5
        • 2.Qa8+
          • 2...Kxa8
            • 3.Bc6+
              • 3...Kb8
                • 4.Ra8#
      • 1...exd5
        • 2.Bc6
          • threat
            • 3.Ra8#
          • 2...Ra3
            • 3.Rxa3
              • threat
                • 4.Ra8#
              • 3...Kc8
                • 4.Ra8#
              • 3...Rxc6
                • 4.Rxh8#
      • 1...c6
        • 2.Qd6+
          • 2...Ka7
            • 3.Bxc6+
              • 3...Kb6
                • 4.Sd7#
                • 4.Bd7#
                • 4.Be8#
                • 4.Ra6#
              • 3...Ra3
                • 4.Qc7#
            • 3.Qc7+
              • 3...Ka8
                • 4.Bb3#
                • 4.Bxc6#
                • 4.Qb7#
          • 2...Kc8
            • 3.Qxc6+
              • 3...Kb8
                • 4.Qb7#
              • 3...Kd8
                • 4.Qd7#
            • 3.Qd7+
              • 3...Kb8
                • 4.Qb7#
      • 1...Qc8
        • 2.Qa8+
          • 2...Kxa8
            • 3.Bc6+
              • 3...Kb8
                • 4.Ra8#
      • 1...Rb3
        • 2.Sd7+
          • 2...Kc8
            • 3.Qa8+
              • 3...Rb8
                • 4.Qxb8#
        • 2.Qa8+
          • 2...Kxa8
            • 3.Bc6+
              • 3...Kb8
                • 4.Ra8#
        • 2.Bc6
          • threat
            • 3.Ra8#
          • 2...Kc8
            • 3.Ra8+
              • 3...Rb8
                • 4.Bb7#
                • 4.Qd7#
            • 3.Qd7+
              • 3...Kb8
                • 4.Ra8#
          • 2...Ra3
            • 3.Rxa3
              • threat
                • 4.Ra8#
              • 3...Kc8
                • 4.Ra8#
          • 2...Rb7
            • 3.Bxb7
              • threat
                • 4.Sd7#
                • 4.Ra8#
              • 3...c6
                • 4.Qd6#

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).