Problem Display
PID: 37764 (8/8/6p1/7N/7Q/6p1/5Np1/3K2k1 w - - 0 1)

Loyd, Sam

Detroit Free Press, 1880

8/8/6p1/7N/7Q/6p1/5Np1/3K2k1

#3

4 + 4


5206 Sam Loyd and His Chess Problems 1913

SOLUTION


  • SOUND
  • Sets
    • 1...Kxf2
      • 2.Qd4+
        • 2...Kf1
          • 3.Sxg3#
        • 2...Kf3
          • 3.Qf4#
  • Tries
    • 1.Qxg3?
      • threat
        • 2.Sg4
          • threat
            • 3.Qe1#
          • 2...Kf1
            • 3.Qe1#
            • 3.Qf2#
          • 2...Kh1
            • 3.Qh2#
        • 2.Sf4
          • threat
            • 3.Qxg2#
          • 2...Kf1
            • 3.Qxg2#
      • 1...Kf1
        • 2.Sh3
          • threat
            • 3.Qe1#
            • 3.Qf2#
            • 3.Qf4#
            • 3.Qd3#
            • 3.Qf3#
          • 2...g1Q
            • 3.Qxg1#
          • 2...g1B
            • 3.Qxg1#
      • 1...g5
        • 2.Sg4
          • threat
            • 3.Qe1#
          • 2...Kf1
            • 3.Qe1#
            • 3.Qf2#
          • 2...Kh1
            • 3.Qh2#
      • 1...gxh5!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sxg3
          • 2...g5
            • 3.Qh2#
        • 2.Qxg3
          • threat
            • 3.Qe1#
          • 2...Kf1
            • 3.Qe1#
            • 3.Qf2#
          • 2...Kh1
            • 3.Qh2#
      • 1...Kf1
        • 2.Sxg3+
          • 2...Kg1
            • 3.Qh2#
      • 1...gxh5
        • 2.Sh2
          • 2...Kh1
            • 3.Sf3#
          • 2...Kf2
            • 3.Qd4#
          • 2...gxh2
            • 3.Qe1#
      • 1...g5
        • 2.Qxg3
          • threat
            • 3.Qe1#
          • 2...Kf1
            • 3.Qe1#
            • 3.Qf2#
          • 2...Kh1
            • 3.Qh2#

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).