Problem Display
PID: 257992 (K1NNk2r/2p2pbp/5p1p/3Q4/8/8/n7/8 w k - 0 1)

Ignatenko, Gennady Petrovich

2nd HM., Kozhakin-65 JT (Kudesnik), 2021

K1NNk2r/2p2pbp/5p1p/3Q4/8/8/n7/8

#4

4 + 9


SOLUTION


  • SOUND
  • Keys
    • 1.Sxf7!
      • threat
        • 2.Qe6+
          • 2...Kf8
            • 3.Sd8
              • threat
                • 4.Qf7#
      • 1...Kf8
        • 2.Qe6
          • threat
            • 3.Sd8
              • threat
                • 4.Qf7#
          • 2...Kg8
            • 3.Se5+
              • 3...Kf8
                • 4.Sd7#
                • 4.Qf7#
            • 3.Sg5+
              • 3...Kf8
                • 4.Qf7#
            • 3.Sfd6+
              • 3...Kf8
                • 4.Qf7#
                • 4.Qe8#
            • 3.Sxh6+
              • 3...Kf8
                • 4.Qf7#
                • 4.Qe7#
            • 3.Sd8+
              • 3...Kf8
                • 4.Qf7#
        • 2.Qd7
          • threat
            • 3.Sd8
              • threat
                • 4.Qf7#
              • 3...Kg8
                • 4.Qf7#
          • 2...Kg8
            • 3.Sd8
              • threat
                • 4.Qf7#
              • 3...Kf8
                • 4.Qf7#
      • 1...0-0
        • 2.Sxh6+
          • 2...Kh8
            • 3.Qg8+
              • 3...Rxg8
                • 4.Sf7#
      • 1...c5
        • 2.Sfd6+
          • 2...Kd7
            • 3.Qf7+
              • 3...Kc6
                • 4.Qb7#
              • 3...Kd8
                • 4.Qe7#
          • 2...Kd8
            • 3.Qc6
              • threat
                • 4.Sb7#
                • 4.Sf7#
        • 2.Qe6+
          • 2...Kf8
            • 3.Sfd6
              • threat
                • 4.Qf7#
                • 4.Qe8#
            • 3.Sd8
              • threat
                • 4.Qf7#
      • 1...c6
        • 2.Sfd6+
          • 2...Kd7
            • 3.Qf7+
              • 3...Kd8
                • 4.Qe7#
          • 2...Kd8
            • 3.Qxc6
              • threat
                • 4.Sb7#
                • 4.Sf7#
        • 2.Qe6+
          • 2...Kf8
            • 3.Sfd6
              • threat
                • 4.Qf7#
                • 4.Qe8#
            • 3.Sd8
              • threat
                • 4.Qf7#

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).