Problem Display
PID: 75407 (8/1p2p3/2p5/p4Np1/p1QNkp2/1P4pP/6P1/7K w - - 0 1)

Makaronets, Leonid

The Problemist, 2007

8/1p2p3/2p5/p4Np1/p1QNkp2/1P4pP/6P1/7K

#4

7 + 9


SOLUTION


  • SOUND
  • Keys
    • 1.b4!
      • threat
        • 2.Qe2+
          • 2...Kd5
            • 3.Qe6#
      • 1...axb4
        • 2.Qe6+
          • 2...Kd3
            • 3.Qe2+
              • 3...Kc3
                • 4.Qc2#
      • 1...f3
        • 2.Sxc6+
          • 2...Kxf5
            • 3.Qf7+
              • 3...Ke4
                • 4.Qxf3#
      • 1...e5
        • 2.Sd6+
          • 2...Ke3
            • 3.Qe2+
              • 3...Kxd4
                • 4.Qd2#

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).