Problem Display
PID: 114126 (3K4/P3Rp1N/2P2P2/4P2P/3R2Pk/pPp3p1/p1p3P1/1bN5 w - - 0 1)

Herland, Sigmund

The Theory of Pawn Promotion, 1912

3K4/P3Rp1N/2P2P2/4P2P/3R2Pk/pPp3p1/p1p3P1/1bN5

#4

13 + 8


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.c7!
      • threat
        • 2.c8Q
          • threat
            • 3.Qf5
              • threat
                • 4.Qg5#
        • 2.c8S
          • threat
            • 3.Sd6
              • threat
                • 4.Sf5#
      • 1...a1Q
        • 2.c8S
          • threat
            • 3.Sd6
              • threat
                • 4.Sf5#
          • 2...a2
            • 3.Sd6
              • 3...Qb2
                • 4.Sf5#
      • 1...a1S
        • 2.c8Q
          • threat
            • 3.Qf5
              • threat
                • 4.Qg5#
          • 2...a2
            • 3.Qf5
              • 3...Sxb3
                • 4.Qg5#
      • 1...a1B
        • 2.c8S
          • threat
            • 3.Sd6
              • threat
                • 4.Sf5#
          • 2...a2
            • 3.Sd6
              • 3...Bb2
                • 4.Sf5#
      • 1...a1R
        • 2.a8B
          • threat
            • 3.Bf3
              • threat
                • 4.g5#
          • 2...a2
            • 3.Be4
              • 3...Kxg4
                • 4.Bg6#

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).