Problem Display
PID: 35097 (8/8/p2p4/p2k2P1/p3N3/P2p4/K6p/2Q4B w - - 0 1)

Loyd, Sam

Detroit Free Press, 1880

8/8/p2p4/p2k2P1/p3N3/P2p4/K6p/2Q4B

#4

6 + 7


5689 The Chess Monthly (Hoffer) 1881
5206 Sam Loyd and His Chess Problems 1913

SOLUTION


  • SOUND
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qxd6+
          • 2...Kc4
            • 3.Qc5#
      • 1...Kd4
        • 2.Qg3
          • 2...Kc4
            • 3.Qe3
              • 3...Kb5
                • 4.Sxd6#
              • 3...Kd5
                • 4.Sd2#
              • 3...d2
                • 4.Sxd6#
              • 3...d5
                • 4.Qc5#
          • 2...Kd5
            • 3.Qxd6+
              • 3...Kc4
                • 4.Qc5#
          • 2...d2
            • 3.Qc3+
              • 3...Kd5
                • 4.Sc5#
          • 2...d5
            • 3.Qf2+
              • 3...Kc4
                • 4.Qc5#
              • 3...Ke5
                • 4.Qf6#
      • 1...Kc6
        • 2.Qxd6+
          • 2...Kb7
            • 3.Sc5+
              • 3...Ka7
                • 4.Qc7#
              • 3...Kc8
                • 4.Bb7#
      • 1...Ke6
        • 2.Sc5+
          • 2...Ke7
            • 3.Qf6+
              • 3...Ke8
                • 4.Bc6#
          • 2...dxc5
            • 3.Bc6
              • threat
                • 4.Qf6#
              • 3...Ke7
                • 4.Qf6#
      • 1...d2
        • 2.Sc3+
          • 2...Kc5
            • 3.Qe3+
              • 3...Kc4
                • 4.Bd5#
          • 2...Ke6
            • 3.Bc6
              • threat
                • 4.Qf6#
              • 3...Ke7
                • 4.Qf6#
        • 2.Sxd6+
          • 2...Kc5
            • 3.Qe5+
              • 3...Kb6
                • 4.Sc8#
          • 2...Ke6
            • 3.Bc6
              • threat
                • 4.Qf6#
              • 3...Ke7
                • 4.Qf6#

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).