Problem Display
PID: 20111 (4N3/4p3/B5pK/4PPP1/1k6/4pp1P/2P3b1/Q4nq1 w - - 0 1)

Kubbel, Arvid Ivanovich

1st Prize, Neue Leipziger Zeitung, 1929

4N3/4p3/B5pK/4PPP1/1k6/4pp1P/2P3b1/Q4nq1

#4

9 + 8


SOLUTION


  • SOUND
  • Keys
    • 1.Sc7!
      • threat
        • 2.Sd5+
          • 2...Kc5
            • 3.Qc3+
              • 3...Kxd5
                • 4.Bb7#
        • 2.Bd3
          • threat
            • 3.Sa6#
          • 2...Kc5
            • 3.Qa7+
              • 3...Kb4
                • 4.Sd5#
              • 3...Kc6
                • 4.Bb5#
      • 1...Kc5
        • 2.Qa5+
          • 2...Kd4
            • 3.Se6+
              • 3...Ke4
                • 4.Bd3#
          • 2...Kc6
            • 3.Se6
              • threat
                • 4.Qb5#
              • 3...Kd7
                • 4.Qa4#
                • 4.Qb5#
      • 1...Sd2
        • 2.Sd5+
          • 2...Kc5
            • 3.Qc3+
              • 3...Kxd5
                • 4.Bb7#
              • 3...Sc4
                • 4.Qxc4#
      • 1...f2
        • 2.Se6
          • threat
            • 3.c3+
              • 3...Kb3
                • 4.Sd4#
      • 1...e6
        • 2.Sb5
          • threat
            • 3.Qc3+
              • 3...Ka4
                • 4.Qa3#
          • 2...Kc5
            • 3.Qd4+
              • 3...Kc6
                • 4.Qd6#

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).