Problem Display
PID: 36686 (2R2rq1/1pPb2pp/1Q1N4/3k4/2pNR3/p4p2/8/4n2K w - - 0 1)

Kos, Ivan

Leipziger Illustrierte Zeitung, 1864

2R2rq1/1pPb2pp/1Q1N4/3k4/2pNR3/p4p2/8/4n2K

#4

7 + 11


SOLUTION


  • SOUND
  • Keys
    • 1.Ra8!
      • threat
        • 2.Ra5+
          • 2...Bb5
            • 3.Rxb5#
      • 1...Rxa8
        • 2.S4f5
          • threat
            • 3.Se3#
            • 3.Se7#
          • 2...Bxf5
            • 3.Sb5
              • threat
                • 4.Sc3#
              • 3...Kxe4
                • 4.Qd4#
              • 3...Bxe4
                • 4.Qd6#
              • 3...c3
                • 4.Sxc3#
      • 1...Bc6
        • 2.Sxc6
          • threat
            • 3.Sb4#
            • 3.Se7#
          • 2...Kxd6
            • 3.Sb8+
              • 3...Kd5
                • 4.Qd4#
            • 3.Sd8+
              • 3...Kd5
                • 4.Qd4#
              • 3...Kd7
                • 4.c8Q#
                • 4.c8B#
        • 2.Sb3
          • threat
            • 3.Qd4#
            • 3.Qc5#
          • 2...Kxd6
            • 3.Qc5+
              • 3...Kxc7
                • 4.Re7#
              • 3...Kd7
                • 4.Re7#
                • 4.Qe7#
        • 2.S4f5
          • threat
            • 3.Qd4#
          • 2...Sc2
            • 3.Ra5+
              • 3...Bb5
                • 4.Se7#
                • 4.Rxb5#
                • 4.Qxb5#
      • 1...Sd3
        • 2.Ra5+
          • 2...Bb5
            • 3.Rxb5+
              • 3...Sc5
                • 4.Rxc5#
                • 4.Qxc5#

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).