Problem Display
PID: 182580 (1n5k/4p3/4P2K/8/8/8/2P5/6R1 w - - 0 1)

Howard, David M

Problem Observer, 2015

1n5k/4p3/4P2K/8/8/8/2P5/6R1

#3

4 + 3


SOLUTION


  • SOUND
  • Sets
    • 1...Sd7
      • 2.exd7
        • threat
          • 3.d8Q#
          • 3.d8R#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Rd8#
      • 1...Sd7
        • 2.Rxd7
          • 2...Kg8
            • 3.Rd8#
      • 1...Sc6!
    • 1.Rf1?
      • threat
        • 2.Rf8#
      • 1...Sd7
        • 2.exd7
          • threat
            • 3.Rf8#
            • 3.d8Q#
            • 3.d8R#
          • 2...Kg8
            • 3.d8Q#
            • 3.d8R#
      • 1...Kg8!
  • Keys
    • 1.Ra1!
      • threat
        • 2.Ra8
          • 2...Kg8
            • 3.Rxb8#
      • 1...Kg8
        • 2.Ra8
          • threat
            • 3.Rxb8#
          • 2...Kf8
            • 3.Rxb8#
          • 2...Kh8
            • 3.Rxb8#
      • 1...Sa6
        • 2.Rxa6
          • 2...Kg8
            • 3.Ra8#
      • 1...Sc6
        • 2.Ra8+
          • 2...Sb8
            • 3.Rxb8#
          • 2...Sd8
            • 3.Rxd8#
      • 1...Sd7
        • 2.Ra8+
          • 2...Sb8
            • 3.Rxb8#
          • 2...Sf8
            • 3.Rxf8#

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).