Problem Display
PID: 251140 (8/4pQBN/Np6/2pp4/1P2k3/8/K4P2/8 w - - 0 1)

Petrasinovic, Petrasin

Uralski Problemist, 2012

8/4pQBN/Np6/2pp4/1P2k3/8/K4P2/8

#4

7 + 5


SOLUTION


  • SOUND
  • Keys
    • 1.Kb3!
      • threat
        • 2.Kc2
          • threat
            • 3.Sg5#
          • 2...e5
            • 3.Sg5+
              • 3...Kd4
                • 4.Qf4#
      • 1...Kd3
        • 2.Qf3+
          • 2...Kd2
            • 3.Bc3+
              • 3...Kc1
                • 4.Qh1#
      • 1...cxb4
        • 2.Sxb4
          • threat
            • 3.Sg5#
          • 2...e5
            • 3.Sg5+
              • 3...Kd4
                • 4.Qxd5#
      • 1...e5
        • 2.Kc2
          • threat
            • 3.Sg5+
              • 3...Kd4
                • 4.Qf4#
      • 1...d4
        • 2.Sxc5+
          • 2...bxc5
            • 3.Kc4
              • threat
                • 4.Sg5#
      • 1...e6
        • 2.Kc2
          • threat
            • 3.Sg5#
          • 2...d4
            • 3.Sg5+
              • 3...Kd5
                • 4.Qxe6#
          • 2...e5
            • 3.Sg5+
              • 3...Kd4
                • 4.Qf4#

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).