Problem Display
PID: 144109 (3K4/1p6/1p6/Nk1P4/1N6/Q7/3P4/8 w - - 0 1)

Donata Fonda, Gian

Deutsche Schachzeitung, 1886

3K4/1p6/1p6/Nk1P4/1N6/Q7/3P4/8

#3

6 + 3


119 Tidskrift for Schack 1909
3713 Snap 2012

SOLUTION


  • SOUND
  • Tries
    • 1.Sa2?
      • threat
        • 2.Sc3+
          • 2...Ka6
            • 3.Sb3#
            • 3.Sc4#
            • 3.Sc6#
      • 1...Ka6
        • 2.Sc4+
          • 2...Kb5
            • 3.Sd6#
      • 1...bxa5!
    • 1.Sc2?
      • threat
        • 2.Sd4+
          • 2...Ka6
            • 3.Sab3#
            • 3.Sc4#
            • 3.Sac6#
      • 1...Ka6
        • 2.Sc4+
          • 2...Kb5
            • 3.Sd6#
      • 1...bxa5!
    • 1.Sd3?
      • 1...Ka6
        • 2.Sc4+
          • 2...Kb5
            • 3.Sd6#
      • 1...bxa5!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Sc7#
      • 1...Kxa6
        • 2.Sc4+
          • 2...Kb5
            • 3.Sd6#
      • 1...bxa5
        • 2.Sc7+
          • 2...Kc4
            • 3.Qc3#
          • 2...Kb6
            • 3.Qe3#
      • 1...bxa6
        • 2.d4
          • 2...bxa5
            • 3.Qb3#

This anticipates 138882(1977)

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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).