Applet "15"

Below you see the "Game 15" applet:

You should run some Java-enabled browser to see the applet...

The source text of ``Game 15'' applet.

Look to a bit more complicated applet "15" on the previos WWW-page. The measuring of the elapsed time during the solving of the riddle is added, and some additional small features, that demonstrate multiple threads, synchronized methods etc. But the source code of the improved applet is not so simple...

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