Problem Display
PID: 212772 (8/2N2b2/2p4Q/N1k4p/Pp2P3/8/1P1P2K1/7n w - - 0 1)

Barnett, James P

American Chess Nuts, 1868

8/2N2b2/2p4Q/N1k4p/Pp2P3/8/1P1P2K1/7n

#4

8 + 6


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Keys
    • 1.Se8!
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qe3+
          • 2...Ke5
            • 3.Sxc6+
              • 3...Ke6
                • 4.Qh3#
      • 1...Bxe8
        • 2.Sc4
          • threat
            • 3.Qe3+
              • 3...Kxc4
                • 4.b3#
            • 3.b3
              • threat
                • 4.Qe3#
                • 4.Qd6#
              • 3...Kd4
                • 4.Qe3#
            • 3.d3
              • threat
                • 4.Qe3#
                • 4.Qd6#
              • 3...Kd4
                • 4.Qe3#
                • 4.Qd6#
          • 2...Kxc4
            • 3.Qe3
              • threat
                • 4.b3#
              • 3...b3
                • 4.Qc3#
          • 2...Kd4
            • 3.Qe3+
              • 3...Kxc4
                • 4.b3#
          • 2...b3
            • 3.Qd6+
              • 3...Kxc4
                • 4.d3#
      • 1...b3
        • 2.Qd6+
          • 2...Kb6
            • 3.Qxc6+
              • 3...Kxa5
                • 4.Qb5#
              • 3...Ka7
                • 4.Qb7#

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).