Problem Display
PID: 36124 (8/4k1B1/K1P3B1/2P5/1P6/8/8/8 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Sovremenoe slovo, 1910

8/4k1B1/K1P3B1/2P5/1P6/8/8/8

#4

6 + 1


1829 The Theory of Pawn Promotion 1912
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION


  • SOUND
  • Keys
    • 1.c7!
      • threat
        • 2.Kb7
          • threat
            • 3.c8B
              • 3...Kd8
                • 4.Bf6#
          • 2...Ke6
            • 3.c8Q+
              • 3...Kd5
                • 4.Qg8#
              • 3...Ke7
                • 4.Qe8#
          • 2...Kd7
            • 3.c8Q+
              • 3...Ke7
                • 4.Qe8#
      • 1...Ke6
        • 2.c8Q+
          • 2...Kd5
            • 3.Ka5
              • 3...Kc4
                • 4.Qe6#
                • 4.Qg8#
      • 1...Kd7
        • 2.Kb7
          • threat
            • 3.c8Q+
              • 3...Ke7
                • 4.Qe8#
          • 2...Ke6
            • 3.c8Q+
              • 3...Kd5
                • 4.Qg8#
              • 3...Ke7
                • 4.Qe8#
          • 2...Ke7
            • 3.c8B
              • 3...Kd8
                • 4.Bf6#

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).