Problem Display
PID: 149789 (2Q5/8/2P2k1P/2P2N2/8/8/B6K/8 w - - 0 1)

de Grandi, Carlo

Troll, 2013

2Q5/8/2P2k1P/2P2N2/8/8/B6K/8

#3

7 + 1


SOLUTION


  • SOUND
  • Tries
    • 1.Kg3?
      • 1...Kg6
        • 2.Kf4
          • 2...Kh5
            • 3.Bf7#
            • 3.Qe8#
          • 2...Kf6
            • 3.Qe6#
          • 2...Kh7
            • 3.Qg8#
        • 2.Kg4
          • 2...Kf6
            • 3.Qe6#
          • 2...Kh7
            • 3.Qg8#
        • 2.Kh4
          • 2...Kf6
            • 3.Qe6#
          • 2...Kh7
            • 3.Qg8#
      • 1...Kg5!
    • 1.Sh4?
      • 1...Ke5
        • 2.Qg4
          • 2...Kf6
            • 3.Qg7#
      • 1...Ke7
        • 2.Sf3
          • 2...Kf6
            • 3.Qe6#
        • 2.Qe6+
          • 2...Kd8
            • 3.Qd7#
          • 2...Kf8
            • 3.Sg6#
            • 3.Qf7#
        • 2.Qd7+
          • 2...Kf6
            • 3.Qg7#
          • 2...Kf8
            • 3.Sg6#
            • 3.Qf7#
            • 3.Qd8#
        • 2.Qg8
          • 2...Kf6
            • 3.Qg7#
      • 1...Kg5!
  • Keys
    • 1.Se7!
      • 1...Ke5
        • 2.Qg4
          • 2...Kf6
            • 3.Qg7#
      • 1...Kg5
        • 2.Qf5+
          • 2...Kh4
            • 3.Sg6#
          • 2...Kxh6
            • 3.Qg6#
      • 1...Kxe7
        • 2.Qe6+
          • 2...Kd8
            • 3.Qd7#
          • 2...Kf8
            • 3.Qf7#

FEATURES


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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).