Problem Display
PID: 115754 (8/1K2k3/Qp6/4N1P1/4P3/8/8/8 w - - 0 1)

Finlayson, JG

Ottawa Citizen, 1887

8/1K2k3/Qp6/4N1P1/4P3/8/8/8

#3

5 + 2


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Tries
    • 1.Qa2?
      • threat
        • 2.Kc7
          • threat
            • 3.Qf7#
          • 2...Ke8
            • 3.Qf7#
          • 2...Kf8
            • 3.Qf7#
      • 1...Kd8
        • 2.Qe6
          • 2...b5
            • 3.Sc6#
            • 3.Sf7#
            • 3.Qd7#
        • 2.Qf7
          • 2...b5
            • 3.Sc6#
            • 3.Qd7#
            • 3.Qf8#
      • 1...Ke8
        • 2.Kc7
          • threat
            • 3.Qf7#
          • 2...Ke7
            • 3.Qf7#
          • 2...Kf8
            • 3.Qf7#
        • 2.Qe6+
          • 2...Kd8
            • 3.Sc6#
            • 3.Sf7#
            • 3.Qd7#
          • 2...Kf8
            • 3.Qf7#
        • 2.Qf7+
          • 2...Kd8
            • 3.Sc6#
            • 3.Qd7#
            • 3.Qf8#
      • 1...Kd6!
    • 1.Qa3+?
      • 1...Ke8
        • 2.Kxb6
          • 2...Kd8
            • 3.Qf8#
      • 1...Ke6!
    • 1.Qxb6?
      • 1...Ke8
        • 2.Qc5
          • 2...Kd8
            • 3.Qf8#
        • 2.Qc7
          • 2...Kf8
            • 3.Qf7#
        • 2.Qb4
          • 2...Kd8
            • 3.Qf8#
        • 2.Qe6+
          • 2...Kd8
            • 3.Sc6#
            • 3.Sf7#
            • 3.Qd7#
          • 2...Kf8
            • 3.Qf7#
      • 1...Kf8!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Kc7
          • threat
            • 3.Qf7#
          • 2...Ke6
            • 3.Qf6#
          • 2...Ke8
            • 3.Qf7#
      • 1...Kd6
        • 2.Qf6+
          • 2...Kc5
            • 3.Qxb6#
      • 1...Ke8
        • 2.Kc7
          • threat
            • 3.Qf7#
          • 2...Ke7
            • 3.Qf7#
        • 2.Qf7+
          • 2...Kd8
            • 3.Sc6#
            • 3.Qd7#
            • 3.Qf8#

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).