Problem Display
PID: 133288 (8/1P2B2p/8/8/BN5K/kP2P3/8/3N4 w - - 0 1)

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

Rigaer Tageblatt, 1909

8/1P2B2p/8/8/BN5K/kP2P3/8/3N4

#3

8 + 2


1829 The Theory of Pawn Promotion 1912

SOLUTION


  • SOUND
  • Tries
    • 1.b8Q?
      • threat
        • 2.Bf6
          • threat
            • 3.Bb2#
        • 2.Qh2
          • threat
            • 3.Sa2#
            • 3.Sd3#
            • 3.Sd5#
            • 3.Sa6#
            • 3.Sc6#
            • 3.Qa2#
            • 3.Qb2#
        • 2.Qe5
          • threat
            • 3.Qa1#
            • 3.Qb2#
        • 2.Qc7
          • threat
            • 3.Qc1#
        • 2.Qc8
          • threat
            • 3.Qc1#
        • 2.Qh8
          • threat
            • 3.Qa1#
            • 3.Qb2#
      • 1...h6
        • 2.Bf6
          • 2...h5
            • 3.Bb2#
        • 2.Qh2
          • 2...h5
            • 3.Sa2#
            • 3.Sd3#
            • 3.Sd5#
            • 3.Sa6#
            • 3.Sc6#
            • 3.Qa2#
            • 3.Qb2#
        • 2.Qe5
          • 2...h5
            • 3.Qa1#
            • 3.Qb2#
        • 2.Qc7
          • 2...h5
            • 3.Qc1#
        • 2.Qc8
          • 2...h5
            • 3.Qc1#
        • 2.Qh8
          • 2...h5
            • 3.Qa1#
            • 3.Qb2#
      • 1...h5!
    • 1.b8R?
      • threat
        • 2.Bf6
          • threat
            • 3.Bb2#
      • 1...h6
        • 2.Bf6
          • 2...h5
            • 3.Bb2#
      • 1...h5!
  • Keys
    • 1.b8B!
      • threat
        • 2.Be5
          • threat
            • 3.Bb2#
      • 1...h6
        • 2.Be5
          • 2...h5
            • 3.Bb2#
      • 1...h5
        • 2.Bd8
          • 2...Kxb4
            • 3.Bd6#

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).