Problem Display
PID: 82679 (2QK2n1/2p5/1pp2pp1/4k2b/1pR5/1N2Pp2/8/8 w - - 0 1)

Havel, Miroslav

The Observer, 1930

(First published on Sun Apr 27 1930)

2QK2n1/2p5/1pp2pp1/4k2b/1pR5/1N2Pp2/8/8

#3

5 + 10


6490 yacpdb 2009
15239 Valois Notebooks 2018

SOLUTION


  • SOUND
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qe6#
      • 1...Bg4
        • 2.Sd3+
          • 2...Kd5
            • 3.Rd4#
          • 2...Kd6
            • 3.Rd4#
      • 1...bxc5!
    • 1.Re4+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
        • 2.Qd7#
      • 1...Kxe4!
    • 1.Rxc6?
      • threat
        • 2.Qe6#
      • 1...Bg4
        • 2.Qxg4
          • threat
            • 3.Qe6#
          • 2...Kd5
            • 3.Qe6#
          • 2...f5
            • 3.Qd4#
      • 1...Ke4!
  • Keys
    • 1.Sc1!
      • threat
        • 2.Sd3+
          • 2...Kd5
            • 3.Rd4#
          • 2...Kd6
            • 3.Rd4#
            • 3.Qd7#
      • 1...Kd5
        • 2.Qd7+
          • 2...Kxc4
            • 3.Qxc6#
          • 2...Ke5
            • 3.Sd3#
      • 1...Kd6
        • 2.Sd3
          • threat
            • 3.Rd4#
            • 3.Qd7#
          • 2...Kd5
            • 3.Rd4#
        • 2.Qd7+
          • 2...Ke5
            • 3.Sd3#
      • 1...f5
        • 2.Rxc6
          • threat
            • 3.Qe6#
          • 2...Ke4
            • 3.Qe6#
          • 2...Kd5
            • 3.Qe6#
      • 1...Bg4
        • 2.Sd3+
          • 2...Kd5
            • 3.Rd4#
          • 2...Kd6
            • 3.Rd4#
      • 1...Se7
        • 2.Sd3+
          • 2...Kd5
            • 3.Rd4#
          • 2...Kd6
            • 3.Qd7#
      • 1...c5
        • 2.Re4+
          • 2...Kxe4
            • 3.Qe6#
          • 2...Kd5
            • 3.Qe6#
          • 2...Kd6
            • 3.Qe6#
            • 3.Qd7#

FEATURES


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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).