Problem Display
PID: 132886 (8/6Q1/4k3/8/5P2/K5N1/3p2B1/8 w - - 0 1)

Howard, David M

Problem Observer, 2009

8/6Q1/4k3/8/5P2/K5N1/3p2B1/8

#3

5 + 2


SOLUTION


  • SOUND
  • Tries
    • 1.Kb4?
      • threat
        • 2.Kc5
          • threat
            • 3.Bh3#
            • 3.Bd5#
            • 3.f5#
        • 2.Bh3+
          • 2...Kd5
            • 3.Qd7#
          • 2...Kd6
            • 3.Qd7#
      • 1...Kd6
        • 2.Qf7
          • threat
            • 3.Sf5#
      • 1...d1S
        • 2.Bh3+
          • 2...Kd5
            • 3.Qd7#
          • 2...Kd6
            • 3.Qd7#
      • 1...d1B
        • 2.Kc5
          • threat
            • 3.Bd5#
            • 3.f5#
      • 1...d1R
        • 2.Bh3+
          • 2...Kd5
            • 3.Qd7#
          • 2...Kd6
            • 3.Qd7#
      • 1...d1Q!
    • 1.Qf7+?
      • 1...Kd6
        • 2.Kb4
          • threat
            • 3.Sf5#
      • 1...Kxf7!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sc5+
          • 2...Kf5
            • 3.Qg5#
          • 2...Kd6
            • 3.Qe5#
      • 1...Kd5
        • 2.Qd7+
          • 2...Kc4
            • 3.Bf1#
      • 1...Kf5
        • 2.Qf6+
          • 2...Kg4
            • 3.Qg5#

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).