Problem Display
PID: 60332 (6B1/K2pBPP1/3P4/5P2/6PP/p1p4k/pPp3R1/1bR1N3 w - - 0 1)

Pauly, Wolfgang

The Theory of Pawn Promotion, 1912

6B1/K2pBPP1/3P4/5P2/6PP/p1p4k/pPp3R1/1bR1N3

#4

13 + 7


721 Variantim 1988
5424 Versunkene Schatze 1998
56 The Problemist 2012

SOLUTION


  • SOUND
  • Keys
    • 1.b3!
      • threat
        • 2.f8Q
          • threat
            • 3.Qa8
              • threat
                • 4.Qf3#
        • 2.f8S
          • threat
            • 3.Sg6
              • threat
                • 4.Sf4#
      • 1...a1Q
        • 2.f8Q
          • threat
            • 3.Qa8
              • threat
                • 4.Qf3#
          • 2...a2
            • 3.Qa8
              • 3...Qb2
                • 4.Qf3#
      • 1...a1S
        • 2.f8S
          • threat
            • 3.Sg6
              • threat
                • 4.Sf4#
          • 2...a2
            • 3.Sg6
              • 3...Sxb3
                • 4.Sf4#
      • 1...a1B
        • 2.f8Q
          • threat
            • 3.Qa8
              • threat
                • 4.Qf3#
          • 2...a2
            • 3.Qa8
              • 3...Bb2
                • 4.Qf3#
      • 1...a1R
        • 2.f8R
          • threat
            • 3.Rc8
              • threat
                • 4.Rxc3#
          • 2...a2
            • 3.Rf6
              • 3...Kxh4
                • 4.Rh6#

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).