Problem Display
PID: 204211 (Q7/1r6/3n4/8/5p2/8/1b6/5K1k w - - 0 1)

Lipton, Michael

The Problemist, 1954

Q7/1r6/3n4/8/5p2/8/1b6/5K1k

#3

2 + 5


SOLUTION


  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qh8+
        • 2...Rh7
          • 3.Qxh7#
    • 1...Ba3
      • 2.Qh8+
        • 2...Rh7
          • 3.Qxh7#
    • 1...Bh8
      • 2.Qxh8+
        • 2...Rh7
          • 3.Qxh7#
    • 1...Sc4
      • 2.Qxb7+
        • 2...Kh2
          • 3.Qg2#
        • 2...f3
          • 3.Qh7#
    • 1...Sb5
      • 2.Qxb7+
        • 2...Kh2
          • 3.Qg2#
        • 2...f3
          • 3.Qh7#
    • 1...Sc8
      • 2.Qxb7+
        • 2...Kh2
          • 3.Qg2#
        • 2...f3
          • 3.Qh7#
    • 1...Se8
      • 2.Qxb7+
        • 2...Kh2
          • 3.Qg2#
        • 2...f3
          • 3.Qh7#
  • Tries
    • 1.Qxb7+?
      • 1...Kh2
        • 2.Qg2#
      • 1...Se4
        • 2.Qh7#
      • 1...f3
        • 2.Qh7#
      • 1...Sxb7!
    • 1.Qh8+?
      • 1...Rh7
        • 2.Qxh7#
      • 1...Bxh8!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qg1#
        • 2.Qg2#
      • 1...Rg7
        • 2.Qh8+
          • 2...Rh7
            • 3.Qxh7#
      • 1...Bg7
        • 2.Qd5+
          • 2...Kh2
            • 3.Qg2#
          • 2...Se4
            • 3.Qh5#
          • 2...f3
            • 3.Qh5#
        • 2.Qh7+
          • 2...Bh6
            • 3.Qxh6#

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).