Problem Display
PID: 181275 (4N3/8/6p1/1p4k1/8/3N3Q/2K5/8 w - - 0 1)

Howard, David M

Problem Observer, 2014

4N3/8/6p1/1p4k1/8/3N3Q/2K5/8

#3

4 + 3


SOLUTION


  • SOUND
  • Tries
    • 1.Qg4+?
      • 1...Kh6
        • 2.Qh4#
      • 1...Kxg4!
    • 1.Qh2?
      • threat
        • 2.Qf4+
          • 2...Kh5
            • 3.Sf6#
            • 3.Sg7#
      • 1...Kg4
        • 2.Sf6+
          • 2...Kf3
            • 3.Qf2#
          • 2...Kf5
            • 3.Qe5#
          • 2...Kg5
            • 3.Qf4#
      • 1...Kf5!
    • 1.Qf3?
      • threat
        • 2.Qf4+
          • 2...Kh5
            • 3.Sf6#
            • 3.Sg7#
      • 1...Kh4
        • 2.Sf6
          • threat
            • 3.Qg4#
          • 2...Kg5
            • 3.Qf4#
      • 1...Kh6!
    • 1.Qg3+?
      • 1...Kh5
        • 2.Sf4+
          • 2...Kh6
            • 3.Qh4#
            • 3.Qxg6#
      • 1...Kf5!
    • 1.Qh4+?
      • 1...Kf5
        • 2.Sg7#
      • 1...Kxh4!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qg4+
          • 2...Kh6
            • 3.Qh4#
      • 1...Kf4
        • 2.Qg4+
          • 2...Ke3
            • 3.Sd1#
          • 2...Ke5
            • 3.Qe4#

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).