Problem Display
PID: 91165 (6KB/8/N5p1/6pp/2Q2p2/k4P2/p7/Rq6 w - - 0 1)

Seibt, Wolfram

Die Schwalbe, 1964

6KB/8/N5p1/6pp/2Q2p2/k4P2/p7/Rq6

#4

6 + 7


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Kf8!
      • threat
        • 2.Rxa2+
          • 2...Qxa2
            • 3.Qb4#
      • 1...Qf5+
        • 2.Ke7
          • threat
            • 3.Rxa2#
            • 3.Qxa2#
            • 3.Qb4#
          • 2...Qe4+
            • 3.fxe4
              • threat
                • 4.Rxa2#
                • 4.Qxa2#
                • 4.Qb4#
          • 2...Qe6+
            • 3.Kxe6
              • threat
                • 4.Rxa2#
                • 4.Qxa2#
                • 4.Qb4#
          • 2...Qd7+
            • 3.Kxd7
              • threat
                • 4.Rxa2#
                • 4.Qxa2#
                • 4.Qb4#
          • 2...Qc5+
            • 3.Sxc5
              • threat
                • 4.Rxa2#
                • 4.Qb3#
                • 4.Qc3#
                • 4.Qa4#
          • 2...Qe5+
            • 3.Bxe5
              • threat
                • 4.Rxa2#
                • 4.Qxa2#
                • 4.Qb4#
          • 2...Qf6+
            • 3.Bxf6
              • threat
                • 4.Rxa2#
                • 4.Qxa2#
                • 4.Qb4#
          • 2...Qf7+
            • 3.Kxf7
              • threat
                • 4.Rxa2#
                • 4.Qxa2#
                • 4.Qb4#
          • 2...Qf8+
            • 3.Kxf8
              • threat
                • 4.Rxa2#
                • 4.Qxa2#
                • 4.Qb4#
          • 2...Qb1
            • 3.Rxa2+
              • 3...Qxa2
                • 4.Qb4#
      • 1...Qb3
        • 2.Bb2+
          • 2...Qxb2
            • 3.Rxa2+
              • 3...Qxa2
                • 4.Qb4#
        • 2.Qc5+
          • 2...Ka4
            • 3.Rxa2+
              • 3...Qxa2
                • 4.Qb4#
              • 3...Qa3
                • 4.Rxa3#
                • 4.Qb4#

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).