Problem Display
PID: 186845 (2K5/2N5/Q7/8/3Nk3/3p4/3P4/8 w - - 0 1)

Chamberlain, Brian E

Problem Observer, 2018

2K5/2N5/Q7/8/3Nk3/3p4/3P4/8

#3

5 + 2


SOLUTION


  • SOUND
  • Tries
    • 1.Sce6?
      • 1...Kd5
        • 2.Qb5+
          • 2...Ke4
            • 3.Qf5#
          • 2...Kd6
            • 3.Qc5#
        • 2.Qa5+
          • 2...Kc4
            • 3.Qb5#
            • 3.Qc5#
          • 2...Ke4
            • 3.Qf5#
          • 2...Kd6
            • 3.Qc5#
      • 1...Ke5!
    • 1.Qb5?
      • threat
        • 2.Qf5+
          • 2...Kxd4
            • 3.Qd5#
        • 2.Qg5
          • 2...Kxd4
            • 3.Qd5#
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kf4!
    • 1.Qa5?
      • threat
        • 2.Qf5+
          • 2...Kxd4
            • 3.Qd5#
        • 2.Qg5
          • 2...Kxd4
            • 3.Qd5#
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kf4!
    • 1.Qe6+?
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kf4!
    • 1.Qg6+?
      • 1...Kf4
        • 2.Scb5
          • 2...Ke5
            • 3.Qf5#
      • 1...Ke5
        • 2.Qg5+
          • 2...Kxd4
            • 3.Qd5#
          • 2...Ke4
            • 3.Qe3#
          • 2...Kd6
            • 3.Scb5#
            • 3.Se8#
      • 1...Kxd4!
    • 1.Qh6?
      • threat
        • 2.Qe3#
      • 1...Ke5
        • 2.Qg5+
          • 2...Kxd4
            • 3.Qd5#
          • 2...Ke4
            • 3.Qe3#
          • 2...Kd6
            • 3.Scb5#
            • 3.Se8#
      • 1...Kxd4!
  • Keys
    • 1.Scb5!
      • 1...Kf4
        • 2.Qg6
          • 2...Ke5
            • 3.Qf5#
      • 1...Kd5
        • 2.Qd6+
          • 2...Kc4
            • 3.Sa3#
          • 2...Ke4
            • 3.Sc3#
      • 1...Ke5
        • 2.Qd6+
          • 2...Ke4
            • 3.Sc3#

There are these versions: 186852

FEATURES


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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).