Problem Display
PID: 234326 (n3k3/4b3/KBp1Q1pP/1N6/2p1b1N1/8/2prqrp1/1R3R2 w - - 0 1)

Caine, Walter Edmund

The Problemist, 1944

n3k3/4b3/KBp1Q1pP/1N6/2p1b1N1/8/2prqrp1/1R3R2

#4

8 + 12


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qxe7#
      • 1...Sc7+
        • 2.Sxc7+
          • 2...Kd8
            • 3.Bxe7+
              • 3...Kxc7
                • 4.Rb7#
            • 3.Rb8+
              • 3...Kxc7
                • 4.Rc8#
                • 4.Qc8#
      • 1...Rd6
        • 2.Sxd6+
          • 2...Kf8
            • 3.Rb8+
              • 3...Bd8
                • 4.Sxc4#
                • 4.Sxe4#
                • 4.Sb5#
                • 4.Sf5#
                • 4.Sb7#
                • 4.Rxd8#
                • 4.Qe8#
            • 3.Qc8+
              • 3...Bd8
                • 4.Qxd8#
      • 1...Rd7
        • 2.Qg8+
          • 2...Rf8
            • 3.Rxf8+
              • 3...Bxf8
                • 4.Qxf8#
            • 3.Qxf8+
              • 3...Bxf8
                • 4.Rxf8#
          • 2...Bf8
            • 3.Qxf8+
              • 3...Rxf8
                • 4.Rxf8#
      • 1...Rf7
        • 2.Qxf7+
          • 2...Kd7
            • 3.Qxe7+
              • 3...Kc8
                • 4.Sa7#
          • 2...Kd8
            • 3.Qxe7+
              • 3...Kc8
                • 4.Sa7#
      • 1...Bd3
        • 2.Sd6+
          • 2...Kf8
            • 3.Rb8+
              • 3...Bd8
                • 4.Sxc4#
                • 4.Se4#
                • 4.Sb5#
                • 4.Sf5#
                • 4.Sb7#
                • 4.Rxd8#
      • 1...Bd5
        • 2.Sd6+
          • 2...Kf8
            • 3.Rb8+
              • 3...Bd8
                • 4.Sxc4#
                • 4.Se4#
                • 4.Sb5#
                • 4.Sf5#
                • 4.Sb7#
                • 4.Rxd8#

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).