Problem Display
PID: 57176 (8/5B2/1p2p3/1K1k4/1p6/5P2/3P1Q2/8 w - - 0 1)

Grupen, Claus

Problem Observer, 2005

8/5B2/1p2p3/1K1k4/1p6/5P2/3P1Q2/8

#4

5 + 4


SOLUTION


  • SOUND
  • Keys
    • 1.Qh2!
      • threat
        • 2.Be8
          • threat
            • 3.Bc6+
              • 3...Kd4
                • 4.Qd6#
          • 2...e5
            • 3.d4
              • threat
                • 4.Qxe5#
              • 3...Kxd4
                • 4.Qd2#
              • 3...Kd6
                • 4.Qxe5#
              • 3...Ke6
                • 4.Qxe5#
              • 3...exd4
                • 4.Bf7#
              • 3...e4
                • 4.Qe5#
        • 2.Qf4
          • 2...b3
            • 3.d4
              • 3...b2
                • 4.Qe5#

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).