Problem Display
PID: 214221 (7Q/5p2/P1N5/3k4/4N3/8/3K4/8 w - - 0 1)

Arnell, Alfred Wilhelm Theodor

Illustrirte Zeitung, 1876

7Q/5p2/P1N5/3k4/4N3/8/3K4/8

#4

5 + 2


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Keys
    • 1.Qf6!
      • threat
        • 2.Se7+
          • 2...Kc4
            • 3.Qb6
              • threat
                • 4.Sd6#
          • 2...Kxe4
            • 3.Qf5+
              • 3...Kd4
                • 4.Qd5#
        • 2.Qe7
          • threat
            • 3.Kc3
              • threat
                • 4.Sb4#
              • 3...Kxc6
                • 4.Qb7#
            • 3.Kd3
              • threat
                • 4.Sb4#
                • 4.Qd6#
                • 4.Qd7#
              • 3...Kxc6
                • 4.Qb7#
          • 2...Kc4
            • 3.Sc3
              • threat
                • 4.Qb4#
              • 3...Kb3
                • 4.Qb4#
      • 1...Kc4
        • 2.Qxf7+
          • 2...Kb5
            • 3.Qb3+
              • 3...Kxa6
                • 4.Sc5#
              • 3...Kxc6
                • 4.Qb7#
      • 1...Kxe4
        • 2.Sa7
          • 2...Kd5
            • 3.Kd3
              • 3...Kc5
                • 4.Qd4#

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).