Problem Display
PID: 59519 (n7/p1p1p3/1pR1N3/kp1K4/qN1P4/2QP4/1PP5/8 w - - 0 1)

Edwards, Brian

The Problemist, 2005

n7/p1p1p3/1pR1N3/kp1K4/qN1P4/2QP4/1PP5/8

#4

9 + 8


SOLUTION


  • SOUND
  • Keys
    • 1.Qe1!
      • 1...Qb3+
        • 2.cxb3
          • 2...a6
            • 3.Sa2+
              • 3...b4
                • 4.Qxb4#
            • 3.Sc2+
              • 3...b4
                • 4.Qxb4#
            • 3.Qa1+
              • 3...Kxb4
                • 4.Qa3#
            • 3.Rc1
              • threat
                • 4.Sc6#
                • 4.Ra1#
              • 3...c6+
                • 4.Sxc6#
            • 3.Rc2
              • threat
                • 4.Sc6#
              • 3...c6+
                • 4.Sxc6#
            • 3.Rd6
              • threat
                • 4.Sc6#
              • 3...c6+
                • 4.Sxc6#
            • 3.Qc1
              • 3...Kxb4
                • 4.Qc3#
      • 1...Qa2+
        • 2.Sxa2+
          • 2...b4
            • 3.Qxb4+
              • 3...Ka6
                • 4.Sc5#
      • 1...Qxc2
        • 2.Sxc2+
          • 2...b4
            • 3.Qxb4+
              • 3...Ka6
                • 4.Sc5#
      • 1...Qxb4
        • 2.Qa1+
          • 2...Qa4
            • 3.b4+
              • 3...Kxb4
                • 4.Qc3#
              • 3...Ka6
                • 4.Sc5#
      • 1...Qa3
        • 2.bxa3
          • 2...Ka4
            • 3.Sa6
              • threat
                • 4.Qb4#
              • 3...Kxa3
                • 4.Qa1#
              • 3...b4
                • 4.Qxb4#
          • 2...a6
            • 3.Sa2+
              • 3...Ka4
                • 4.Qb4#
              • 3...b4
                • 4.Qxb4#
      • 1...a6
        • 2.Rc4
          • threat
            • 3.Sc6#
          • 2...bxc4
            • 3.Sc6+
              • 3...Kb5
                • 4.Sa7#

This is a version

Version of J. H. Barrow.

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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).