Problem Display
PID: 8276 (4kN1K/N6R/4p3/5p1p/8/3pr1n1/5n2/6b1 w - - 0 1)

Froberg, Johan Hilding Laurentius

4th Place, International ?, 1971

4kN1K/N6R/4p3/5p1p/8/3pr1n1/5n2/6b1

#3

4 + 9


SOLUTION


  • SOUND
  • Tries
    • 1.Sb5?
      • threat
        • 2.Sd6+
          • 2...Kd8
            • 3.Rd7#
          • 2...Kxf8
            • 3.Rf7#
      • 1...Kd8
        • 2.Sd6
          • threat
            • 3.Rd7#
      • 1...Kxf8
        • 2.Sd6
          • threat
            • 3.Rf7#
      • 1...Rf3
        • 2.Sd6+
          • 2...Kd8
            • 3.Sxe6#
            • 3.Rd7#
          • 2...Kxf8
            • 3.Rf7#
        • 2.Sxe6
          • threat
            • 3.Sd6#
            • 3.Sbc7#
      • 1...Sfe4
        • 2.Sxe6
          • threat
            • 3.Sbc7#
      • 1...e5
        • 2.Sd6+
          • 2...Kd8
            • 3.Se6#
            • 3.Rd7#
          • 2...Kxf8
            • 3.Rf7#
        • 2.Se6
          • threat
            • 3.Sd6#
            • 3.Sbc7#
      • 1...Sge4!
    • 1.Sd7?
      • threat
        • 2.Sc6
          • threat
            • 3.Re7#
      • 1...Kd8
        • 2.Sf6
          • threat
            • 3.Rd7#
      • 1...f4!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Sd6+
          • 2...Kd8
            • 3.Rd7#
          • 2...Kxf8
            • 3.Rf7#
      • 1...Kd8
        • 2.Sd6
          • threat
            • 3.Rd7#
      • 1...Kxf8
        • 2.Sd6
          • threat
            • 3.Rf7#
      • 1...Rf3
        • 2.Sd6+
          • 2...Kd8
            • 3.Sxe6#
            • 3.Rd7#
          • 2...Kxf8
            • 3.Rf7#
        • 2.Sxe6
          • threat
            • 3.Sd6#
            • 3.Re7#
      • 1...Sfe4
        • 2.Sxe6
          • threat
            • 3.Re7#
      • 1...Sge4
        • 2.Sxe6
          • threat
            • 3.Re7#
      • 1...e5
        • 2.Sd6+
          • 2...Kd8
            • 3.Se6#
            • 3.Rd7#
          • 2...Kxf8
            • 3.Rf7#
        • 2.Se6
          • threat
            • 3.Sd6#
            • 3.Re7#

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).