Problem Display
PID: 25197 (8/1p6/1P1pppP1/4k3/1P1pP3/1P3K1p/8/Q7 w - - 0 1)

Gross, Izidor

Source?, 1909

8/1p6/1P1pppP1/4k3/1P1pP3/1P3K1p/8/Q7

#4

7 + 7


SOLUTION


  • SOUND
  • Keys
    • 1.Qa8!
      • 1...h2
        • 2.Qh8
          • threat
            • 3.Qxh2#
          • 2...h1Q+
            • 3.Qxh1
              • threat
                • 4.Qh2#
              • 3...d3
                • 4.Qa1#
              • 3...f5
                • 4.Qh8#
          • 2...h1B+
            • 3.Qxh1
              • threat
                • 4.Qh2#
              • 3...d3
                • 4.Qa1#
              • 3...f5
                • 4.Qh8#
          • 2...d3
            • 3.Qxh2+
              • 3...Kd4
                • 4.Qb2#
          • 2...h1S
            • 3.Qh2+
              • 3...Sg3
                • 4.Qxg3#
            • 3.Qh5+
              • 3...f5
                • 4.Qh8#
            • 3.Qxh1
              • threat
                • 4.Qh2#
              • 3...d3
                • 4.Qa1#
              • 3...f5
                • 4.Qh8#
          • 2...h1R
            • 3.Qxh1
              • threat
                • 4.Qh2#
              • 3...d3
                • 4.Qa1#
              • 3...f5
                • 4.Qh8#

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).