Problem Display
PID: 69495 (1K6/3b1p2/5Bp1/Rn1kP1P1/pP4B1/P1p1P3/2P2PP1/8 w - - 0 1)

Kohtz, Johannes

Schachzeitung der Berliner Schachgesellschaft, 1861

1K6/3b1p2/5Bp1/Rn1kP1P1/pP4B1/P1p1P3/2P2PP1/8

#4

12 + 7


SOLUTION


  • SOUND
  • Keys
    • 1.Bxd7!
      • threat
        • 2.Rxb5+
          • 2...Ke4
            • 3.e6
              • 3...fxe6
                • 4.Bc6#
                • 4.Re5#
      • 1...Kc4
        • 2.Bxb5+
          • 2...Kd5
            • 3.Kc7
              • 3...Ke4
                • 4.Bd3#
              • 3...Ke6
                • 4.Bd7#
            • 3.Kc8
              • 3...Ke4
                • 4.Bd3#
              • 3...Ke6
                • 4.Bd7#
      • 1...Ke4
        • 2.Bxb5
          • threat
            • 3.Bd3#
          • 2...Kd5
            • 3.Kc7
              • 3...Ke4
                • 4.Bd3#
              • 3...Ke6
                • 4.Bd7#
            • 3.Kc8
              • 3...Ke4
                • 4.Bd3#
              • 3...Ke6
                • 4.Bd7#
          • 2...Kf5
            • 3.Be2
              • 3...Ke4
                • 4.Bd3#
              • 3...Ke6
                • 4.Bg4#

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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).