Problem Display
PID: 207703 (6Q1/Nn6/1p2Bp2/k7/8/8/1K6/8 w - - 0 1)

Lehmkuhl, Alexander

Die Schwalbe, 1975

6Q1/Nn6/1p2Bp2/k7/8/8/1K6/8

#4

4 + 4


SOLUTION


  • SOUND
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qb5#
      • 1...Ka6
        • 2.Bc8
          • threat
            • 3.Qa4#
          • 2...Kxa7
            • 3.Qd7
              • threat
                • 4.Qxb7#
              • 3...Ka6
                • 4.Qa4#
              • 3...Ka8
                • 4.Qxb7#
              • 3...Kb8
                • 4.Qxb7#
          • 2...b5
            • 3.Qxb5+
              • 3...Kxa7
                • 4.Qxb7#
            • 3.Qc6+
              • 3...Ka5
                • 4.Qxb5#
              • 3...Kxa7
                • 4.Qxb7#
      • 1...Sd6
        • 2.Qb5+
          • 2...Sxb5
            • 3.Sc6+
              • 3...Ka4
                • 4.Bb3#
              • 3...Ka6
                • 4.Bc8#

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).