Problem Display
PID: 236116 (k2n4/B1K5/1Pn5/8/8/8/8/7B w - - 0 1)

Andrade, Barry Jack da Costa

Parallele 50, 1949

k2n4/B1K5/1Pn5/8/8/8/8/7B

#4

4 + 3


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Keys
    • 1.Be4!
      • 1...Se6+
        • 2.Kxc6
          • threat
            • 3.Kb5#
            • 3.Kd6#
            • 3.Kd7#
          • 2...Sd4+
            • 3.Kc5+
              • 3...Sc6
                • 4.Bxc6#
            • 3.Kd6+
              • 3...Sc6
                • 4.Bxc6#
            • 3.Kc7+
              • 3...Sc6
                • 4.Bxc6#
            • 3.Kd7+
              • 3...Sc6
                • 4.Bxc6#
          • 2...Sd8+
            • 3.Kc7+
              • 3...Sc6
                • 4.Bxc6#
              • 3...Sb7
                • 4.Bxb7#
          • 2...Sf4
            • 3.Kb5+
              • 3...Sd5
                • 4.Bxd5#
            • 3.Kc5+
              • 3...Sd5
                • 4.Bxd5#
            • 3.Kd6+
              • 3...Sd5
                • 4.Bxd5#
            • 3.Kc7+
              • 3...Sd5+
                • 4.Bxd5#
            • 3.Kd7+
              • 3...Sd5
                • 4.Bxd5#
          • 2...Sg5
            • 3.Bd5
              • threat
                • 4.Kb5#
                • 4.Kc5#
                • 4.Kd6#
                • 4.Kc7#
                • 4.Kd7#
      • 1...Sb7
        • 2.Kxc6
          • 2...Sa5+
            • 3.Kc7+
              • 3...Sc6
                • 4.Bxc6#
              • 3...Sb7
                • 4.Bxb7#
          • 2...Sd8+
            • 3.Kc7+
              • 3...Sc6
                • 4.Bxc6#
              • 3...Sb7
                • 4.Bxb7#

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).