Problem Display
PID: 266608 (6K1/1p2N3/nP1pk3/2p4P/7B/8/2P1P2n/4Q1br w - - 0 1)

Suvorov, Ivan

Zadachi i Etyudi, 2011

6K1/1p2N3/nP1pk3/2p4P/7B/8/2P1P2n/4Q1br

#4

8 + 8


SOLUTION


  • SOUND
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qf6+
          • 2...Kd7
            • 3.Qf5+
              • 3...Kd8
                • 4.Qc8#
              • 3...Ke8
                • 4.Qc8#
        • 2.Qd3
          • threat
            • 3.Qf5#
          • 2...Ke5
            • 3.e3
              • threat
                • 4.Qf5#
                • 4.Qd5#
              • 3...Ke6
                • 4.Qf5#
              • 3...Bxe3
                • 4.Qxe3#
              • 3...d5
                • 4.Qxd5#
          • 2...Kd7
            • 3.Qf5+
              • 3...Kd8
                • 4.Qc8#
              • 3...Ke8
                • 4.Qc8#
      • 1...Kd7
        • 2.Qh3+
          • 2...Sg4
            • 3.Qxg4+
              • 3...Kd8
                • 4.Qc8#
              • 3...Ke8
                • 4.Qc8#
      • 1...Bd4
        • 2.Qh3+
          • 2...Sg4
            • 3.Qxg4+
              • 3...Ke5
                • 4.Qf5#
      • 1...d5
        • 2.Qf6+
          • 2...Kd7
            • 3.Qf5+
              • 3...Kd6
                • 4.Qxd5#
              • 3...Kd8
                • 4.Qc8#
              • 3...Ke8
                • 4.Qc8#
      • 1...Sg4
        • 2.Qc4+
          • 2...Ke5
            • 3.Sg6+
              • 3...Kf5
                • 4.e4#
          • 2...Kd7
            • 3.Qxg4+
              • 3...Kd8
                • 4.Qc8#
              • 3...Ke8
                • 4.Qc8#
      • 1...Sc7
        • 2.bxc7
          • threat
            • 3.c8Q#
            • 3.c8B#
          • 2...Bd4
            • 3.c8Q+
              • 3...Ke5
                • 4.Qf5#
          • 2...d5
            • 3.Qf6+
              • 3...Kd7
                • 4.c8Q#
            • 3.c8Q+
              • 3...Kd6
                • 4.Sf5#
                • 4.Qf6#
                • 4.Qg3#
            • 3.c8B+
              • 3...Kd6
                • 4.Qg3#
            • 3.Qg3
              • threat
                • 4.c8Q#
                • 4.c8B#
              • 3...Kd7
                • 4.c8Q#

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).