Problem Display
PID: 69607 (8/3N4/2ppp3/8/Pp1k1BP1/1p1B1p2/1P1K1P2/8 w - - 0 1)

Knorre, Victor Karlovich

Schachzeitung der Berliner Schachgesellschaft, 1861

8/3N4/2ppp3/8/Pp1k1BP1/1p1B1p2/1P1K1P2/8

#4

8 + 7


SOLUTION


  • SOUND
  • Keys
    • 1.Ba6!
      • 1...Ke4
        • 2.Be3
          • 2...Kd5
            • 3.Kd3
              • threat
                • 4.Bc4#
              • 3...c5
                • 4.Bb7#
          • 2...c5
            • 3.Bc4
              • 3...d5
                • 4.Bd3#
              • 3...e5
                • 4.Sf6#
      • 1...c5
        • 2.Be3+
          • 2...Ke4
            • 3.Bc4
              • 3...d5
                • 4.Bd3#
              • 3...e5
                • 4.Sf6#
          • 2...Kd5
            • 3.Bb7+
              • 3...Kc4
                • 4.Sb6#
      • 1...e5
        • 2.Be3+
          • 2...Kd5
            • 3.Bc4+
              • 3...Kxc4
                • 4.Sb6#
              • 3...Ke4
                • 4.Sf6#

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).