Problem Display
PID: 35357 (1Bk5/7K/4p1p1/3p4/1Q6/p7/8/5b2 w - - 0 1)

Zepler, Erich Ernest

Die Welt, 1967

1Bk5/7K/4p1p1/3p4/1Q6/p7/8/5b2

#4

3 + 6


SOLUTION


  • SOUND
  • Keys
    • 1.Kg8!
      • threat
        • 2.Qb6
          • threat
            • 3.Qc7#
          • 2...Kd7
            • 3.Kf7
              • threat
                • 4.Qc7#
              • 3...Kc8
                • 4.Qc7#
      • 1...Kd7
        • 2.Qd6+
          • 2...Ke8
            • 3.Bc7
              • threat
                • 4.Qxe6#
                • 4.Qd8#
      • 1...Kd8
        • 2.Qd6+
          • 2...Ke8
            • 3.Bc7
              • threat
                • 4.Qxe6#
                • 4.Qd8#
        • 2.Kf7
          • threat
            • 3.Qa5+
              • 3...Kd7
                • 4.Qc7#
              • 3...Kc8
                • 4.Qc7#
            • 3.Qd6+
              • 3...Kc8
                • 4.Qc7#
            • 3.Qe7+
              • 3...Kc8
                • 4.Qc7#
            • 3.Qf8+
              • 3...Kd7
                • 4.Qe8#
            • 3.Qb6+
              • 3...Kd7
                • 4.Qc7#
              • 3...Kc8
                • 4.Qc7#
            • 3.Qc5
              • threat
                • 4.Qc7#
              • 3...Kd7
                • 4.Qc7#
            • 3.Qb7
              • threat
                • 4.Qc7#
          • 2...Kd7
            • 3.Qd6+
              • 3...Kc8
                • 4.Qc7#
            • 3.Qb7+
              • 3...Kd8
                • 4.Qc7#
            • 3.Qc5
              • threat
                • 4.Qc7#
              • 3...Kd8
                • 4.Qc7#
            • 3.Qb6
              • threat
                • 4.Qc7#
              • 3...Kc8
                • 4.Qc7#
          • 2...Kc8
            • 3.Qb6
              • threat
                • 4.Qc7#
              • 3...Kd7
                • 4.Qc7#
        • 2.Kf8
          • threat
            • 3.Qa5+
              • 3...Kd7
                • 4.Qc7#
              • 3...Kc8
                • 4.Qc7#
            • 3.Qd6+
              • 3...Kc8
                • 4.Qc7#
            • 3.Qe7+
              • 3...Kc8
                • 4.Qc7#
            • 3.Qb6+
              • 3...Kd7
                • 4.Qc7#
              • 3...Kc8
                • 4.Qc7#
            • 3.Qc5
              • threat
                • 4.Qc7#
              • 3...Kd7
                • 4.Qc7#
            • 3.Qb7
              • threat
                • 4.Qc7#
          • 2...Kd7
            • 3.Qd6+
              • 3...Kc8
                • 4.Qc7#
            • 3.Qb7+
              • 3...Kd8
                • 4.Qc7#
          • 2...Kc8
            • 3.Qb6
              • threat
                • 4.Qc7#
              • 3...Kd7
                • 4.Qc7#
      • 1...Bb5
        • 2.Qd6
          • threat
            • 3.Qc7#
          • 2...Kb7
            • 3.Qc7+
              • 3...Ka6
                • 4.Qa7#
              • 3...Ka8
                • 4.Qa7#

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).