Problem Display
PID: 25378 (1q5B/8/2p2N2/3p4/3k4/1rR1p3/bN2P1Qn/3K4 w - - 0 1)

Anonymous

The Westminster Papers, 1871

1q5B/8/2p2N2/3p4/3k4/1rR1p3/bN2P1Qn/3K4

#4

7 + 8


SOLUTION


  • SOUND
  • Keys
    • 1.Sd7+!
      • 1...Qxh8
        • 2.Qg5
          • threat
            • 3.Qxe3#
          • 2...Kxc3
            • 3.Qxe3+
              • 3...Kxb2
                • 4.Qc1#
              • 3...Kb4
                • 4.Qc5#
          • 2...Ke4
            • 3.Sc5+
              • 3...Kd4
                • 4.Qxe3#
            • 3.Qg6+
              • 3...Kd4
                • 4.Qd3#
              • 3...Kf4
                • 4.Sd3#
          • 2...Qe8
            • 3.Qf6+
              • 3...Ke4
                • 4.Sc5#
              • 3...Qe5
                • 4.Qxe5#
          • 2...Sf1
            • 3.Qf4+
              • 3...Kxc3
                • 4.Sa4#
            • 3.Qg4+
              • 3...Kxc3
                • 4.Sa4#
          • 2...Sg4
            • 3.Qf4+
              • 3...Kxc3
                • 4.Sa4#
            • 3.Qxg4+
              • 3...Kxc3
                • 4.Sa4#

FEATURES


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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).