Problem Display
PID: 59360 (4kNQ1/2B4p/5P2/p7/r2n4/5p2/8/bn5K w - - 0 1)

Havel, Miroslav

Source?, 1903

4kNQ1/2B4p/5P2/p7/r2n4/5p2/8/bn5K

#4

5 + 8


1099 WCSC 1992
5396 World Chess Solving Championship 1977-1996 1997

SOLUTION


  • SOUND
  • Keys
    • 1.Be5!
      • threat
        • 2.Sg6+
          • 2...Kd7
            • 3.Qd5+
              • 3...Kc8
                • 4.Se7#
              • 3...Ke8
                • 4.f7#
      • 1...Sf5
        • 2.f7+
          • 2...Ke7
            • 3.Sg6+
              • 3...Ke6
                • 4.f8S#
              • 3...Kd7
                • 4.Qe8#
              • 3...hxg6
                • 4.Qe8#
          • 2...Kd8
            • 3.Se6+
              • 3...Kd7
                • 4.Qe8#
              • 3...Ke7
                • 4.Qe8#
            • 3.Sg6+
              • 3...Kd7
                • 4.Qe8#
            • 3.Sd7+
              • 3...Kxd7
                • 4.Qe8#
              • 3...Ke7
                • 4.Qe8#
            • 3.Sxh7+
              • 3...Kd7
                • 4.Qe8#
              • 3...Ke7
                • 4.Qe8#
      • 1...Sc3
        • 2.Bb8
          • threat
            • 3.Sg6+
              • 3...Kd7
                • 4.Se5#
          • 2...Kd8
            • 3.Sg6+
              • 3...Kd7
                • 4.Se5#
            • 3.Qxh7
              • threat
                • 4.Qd7#
              • 3...Kc8
                • 4.Qc7#
              • 3...Ke8
                • 4.Qe7#
            • 3.Qf7
              • threat
                • 4.Qd7#
              • 3...Kc8
                • 4.Qc7#
            • 3.Qg7
              • threat
                • 4.Qd7#
              • 3...Kc8
                • 4.Qc7#
              • 3...Ke8
                • 4.Qe7#
          • 2...Sc6
            • 3.Se6+
              • 3...Kd7
                • 4.Sc5#
          • 2...Se6
            • 3.Qxe6+
              • 3...Kd8
                • 4.Qd7#
              • 3...Kxf8
                • 4.Bd6#
      • 1...Sb5
        • 2.Qe6+
          • 2...Kxf8
            • 3.Qe7+
              • 3...Kg8
                • 4.Qg7#
                • 4.Qe8#
                • 4.f7#

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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).