Problem Display
PID: 191567 (8/KN5p/1p2pn1r/3p2P1/1pnk2P1/5pPp/R1PP4/4Q3 w - - 0 1)

Frankenstein, Edward Nathan

1st Prize, Deutsche Schachzeitung, 1917

8/KN5p/1p2pn1r/3p2P1/1pnk2P1/5pPp/R1PP4/4Q3

#4

9 + 11


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Keys
    • 1.Ra4!
      • threat
        • 2.Rxb4
          • threat
            • 3.Qe3#
          • 2...Sxg4
            • 3.Qa1+
              • 3...Ke4
                • 4.Sd6#
          • 2...Se4
            • 3.Qe3+
              • 3...Ke5
                • 4.d4#
      • 1...Sxg4
        • 2.Rxb4
          • threat
            • 3.Qa1+
              • 3...Ke4
                • 4.Sd6#
          • 2...f2
            • 3.Qe2
              • threat
                • 4.c3#
              • 3...Se3
                • 4.Qxe3#
          • 2...e5
            • 3.Qb1
              • threat
                • 4.c3#
              • 3...Ke4
                • 4.c3#
              • 3...e4
                • 4.Qa1#
                • 4.Qb2#
      • 1...Se4
        • 2.Rxb4
          • threat
            • 3.Qe3+
              • 3...Ke5
                • 4.d4#
          • 2...Ke5
            • 3.Qe3
              • threat
                • 4.d4#
              • 3...Sxd2
                • 4.Qd4#
                • 4.Qf4#
              • 3...d4
                • 4.Rb5#
          • 2...Sxd2
            • 3.Qxd2+
              • 3...Ke4
                • 4.Qf4#
              • 3...Ke5
                • 4.Qf4#
      • 1...f2
        • 2.Qxf2+
          • 2...Se3
            • 3.Rxb4+
              • 3...Ke5
                • 4.Qf4#
            • 3.Qxe3+
              • 3...Kc4
                • 4.Sd6#
                • 4.Qd3#

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).