Problem Display
PID: 230102 (K4n2/pQ1p1N2/3P3p/2PB1k1P/5p2/6pP/2PPPr2/8 w - - 0 1)

Berger, Johann Nepomuk

Tidskrift for Schack, 1911

K4n2/pQ1p1N2/3P3p/2PB1k1P/5p2/6pP/2PPPr2/8

#4

11 + 8


SOLUTION


  • SOUND
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qd3+
          • 2...Kf6
            • 3.Qc3+
              • 3...Kf5
                • 4.Qe5#
            • 3.Qd4+
              • 3...Kf5
                • 4.Qe5#
      • 1...Rxe2
        • 2.Qxe2
          • threat
            • 3.Qe5#
          • 2...Sg6
            • 3.Qd3+
              • 3...Kf6
                • 4.Qxg6#
            • 3.Qg4+
              • 3...Kf6
                • 4.Qxg6#
            • 3.Qe4+
              • 3...Kf6
                • 4.Qxg6#
      • 1...Rf3
        • 2.Qa1
          • threat
            • 3.Qe5#
          • 2...Rc3
            • 3.e4+
              • 3...Kf6
                • 4.Qxc3#
              • 3...fxe4 ep
                • 4.Qf1#
          • 2...Re3
            • 3.dxe3
              • threat
                • 4.Qe5#
                • 4.e4#
          • 2...Sg6
            • 3.Qg7
              • threat
                • 4.Qxg6#
              • 3...Sh4
                • 4.Sxh6#
                • 4.Qe5#
              • 3...Se5
                • 4.Sxh6#
                • 4.Qxe5#
              • 3...Se7
                • 4.Sxh6#
                • 4.Qe5#
              • 3...Sf8
                • 4.Sxh6#
                • 4.Qe5#
              • 3...Sh8
                • 4.Sxh6#
                • 4.Qe5#

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).