Problem Display
PID: 81252 (8/8/8/p7/6KQ/8/Np6/bk6 w - - 0 1)

Antipov, Viacheslav Pavlovich

Novgorodskaya pravda, 1984

8/8/8/p7/6KQ/8/Np6/bk6

#4

3 + 4


SOLUTION


  • SOUND
  • Keys
    • 1.Kf3!
      • threat
        • 2.Qc4
          • 2...a4
            • 3.Sb4
              • 3...a3
                • 4.Qf1#
                • 4.Qc2#
      • 1...Kxa2
        • 2.Qa4+
          • 2...Kb1
            • 3.Ke2
              • 3...Kc1
                • 4.Qd1#
      • 1...Kc2
        • 2.Qa4+
          • 2...Kb1
            • 3.Sc3+
              • 3...Kc1
                • 4.Qd1#
          • 2...Kd2
            • 3.Qc4
              • threat
                • 4.Qe2#
              • 3...Kd1
                • 4.Qe2#
              • 3...Ke1
                • 4.Qe2#
            • 3.Qe4
              • threat
                • 4.Qe2#
              • 3...Kd1
                • 4.Qe2#
          • 2...Kd3
            • 3.Qe4+
              • 3...Kd2
                • 4.Qe2#

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).