Problem Display
PID: 13522 (8/R2P2pP/3kB1p1/6p1/KN4P1/8/8/8 w - - 0 1)

Kohnlein, Friedrich

Offiziers Schachzeitung, 1905

8/R2P2pP/3kB1p1/6p1/KN4P1/8/8/8

#3

7 + 4


1829 The Theory of Pawn Promotion 1912

SOLUTION


  • SOUND
  • Sets
    • 1...Ke7
      • 2.d8Q+
        • 2...Kxe6
          • 3.Qe7#
        • 2...Kxd8
          • 3.h8Q#
          • 3.h8R#
  • Tries
    • 1.Sc6?
      • 1...Kc5
        • 2.d8Q
          • 2...Kxc6
            • 3.Qc7#
      • 1...Kxe6
        • 2.d8R
          • 2...Kf6
            • 3.Rd6#
      • 1...Kxc6!
    • 1.Bc4?
      • 1...Kc5
        • 2.d8Q
          • 2...Kxc4
            • 3.Rc7#
      • 1...Ke7
        • 2.d8Q+
          • 2...Kxd8
            • 3.h8Q#
            • 3.h8R#
      • 1...Ke5!
    • 1.d8Q+?
      • 1...Kc5
        • 2.Ra5#
      • 1...Kxe6
        • 2.Qe7#
      • 1...Ke5!
  • Keys
    • 1.Sd3!
      • 1...Kc6
        • 2.d8B
          • 2...Kd6
            • 3.Ra6#
      • 1...Kxe6
        • 2.d8R
          • 2...Kf6
            • 3.Rd6#
      • 1...Ke7
        • 2.d8S+
          • 2...Kd6
            • 3.Rd7#
          • 2...Kf6
            • 3.Rf7#
          • 2...Kxd8
            • 3.h8Q#
            • 3.h8R#
          • 2...Ke8
            • 3.h8Q#
            • 3.h8R#
          • 2...Kf8
            • 3.h8Q#
            • 3.h8R#

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).