Problem Display
PID: 14935 (5r1b/2P2p2/pBKP4/4k1P1/2B5/1P1p1p2/1p1NbRNp/1R5Q w - - 0 1)

Butcher, FG

1st HM., The Observer, 1956

5r1b/2P2p2/pBKP4/4k1P1/2B5/1P1p1p2/1p1NbRNp/1R5Q

#3

12 + 10


136 Problem Observer 1972

SOLUTION


  • SOUND
  • Sets
    • 1...Bf1
      • 2.Rxf3
        • threat
          • 3.Qxh2#
        • 2...f5
          • 3.Re3#
    • 1...fxg2
      • 2.Qxh2#
    • 1...f5
      • 2.Ra1
        • threat
          • 3.Ra5#
        • 2...bxa1Q
          • 3.Qxa1#
        • 2...bxa1S
          • 3.Qxa1#
        • 2...bxa1B
          • 3.Qxa1#
        • 2...bxa1R
          • 3.Qxa1#
        • 2...a5
          • 3.Rxa5#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Qxh2#
      • 1...f5
        • 2.Sg6#
      • 1...Kf4!
    • 1.Rxf3?
      • threat
        • 2.Qxh2#
      • 1...f5
        • 2.Re3#
      • 1...Bxf3+!
    • 1.c8Q?
      • threat
        • 2.Qxh2#
      • 1...f5
        • 2.Qe6#
      • 1...Rxc8+!
  • Keys
    • 1.Rg1!
      • threat
        • 2.Qxh2+
          • 2...Kf5
            • 3.Sh4#
      • 1...Kf5
        • 2.Sh4+
          • 2...Kf4
            • 3.Qxh2#
          • 2...Ke5
            • 3.Qxh2#
      • 1...hxg1Q
        • 2.Qh7
          • threat
            • 3.Qe4#
          • 2...f5
            • 3.Qe7#
      • 1...hxg1S
        • 2.Qh7
          • threat
            • 3.Qe4#
          • 2...f5
            • 3.Qe7#
      • 1...hxg1B
        • 2.Qh7
          • threat
            • 3.Qe4#
          • 2...f5
            • 3.Qe7#
      • 1...hxg1R
        • 2.Qh7
          • threat
            • 3.Qe4#
          • 2...f5
            • 3.Qe7#
      • 1...f5
        • 2.Ra1
          • threat
            • 3.Ra5#
          • 2...bxa1Q
            • 3.Qxa1#
          • 2...bxa1S
            • 3.Qxa1#
          • 2...bxa1B
            • 3.Qxa1#
          • 2...bxa1R
            • 3.Qxa1#
          • 2...a5
            • 3.Rxa5#

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).