Problem Display
PID: 255584 (5b2/n6n/8/3p2p1/3k2p1/N2P2B1/4P1pR/2Q3Kb w - - 0 1)

Dowd, Steven B

Problemist Ukraini, 2021

5b2/n6n/8/3p2p1/3k2p1/N2P2B1/4P1pR/2Q3Kb

#4

7 + 9


SOLUTION


  • SOUND
  • Keys
    • 1.Sb1!
      • threat
        • 2.Qc3+
          • 2...Ke3
            • 3.Qe5#
      • 1...Bb4
        • 2.Qc7
          • threat
            • 3.Bf2#
          • 2...Bd6
            • 3.Qxd6
              • threat
                • 4.Bf2#
                • 4.Qb6#
              • 3...Ke3
                • 4.Qe5#
      • 1...Sb5
        • 2.Sd2
          • threat
            • 3.Sb3#
          • 2...Ke3
            • 3.Sc4+
              • 3...Kxe2
                • 4.Qf1#
              • 3...Kd4
                • 4.Bf2#
      • 1...Sc6
        • 2.Qc3+
          • 2...Ke3
            • 3.Qe1
              • threat
                • 4.Qf2#
              • 3...Kd4
                • 4.Qf2#
      • 1...Sf6
        • 2.Sd2
          • threat
            • 3.Sb3#
          • 2...Ke3
            • 3.Sc4+
              • 3...Kxe2
                • 4.Qf1#
              • 3...Kd4
                • 4.Bf2#

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).