All puzzles are programmed in Java and work flawlessly
with both old and new browsers. Our puzzles can also be played by
puzzlers behind a firewall.
Just add one line of html to your webpage, and the page
picks the puzzle from our webserver. Your visitors will not know
This has the advantage that
we can replace the puzzle with a new one or quickly solve any problems
that may occur. You do not need to do anything. That is very handy
with a weekly puzzle, and even necessary with a daily puzzle. It
is also necessary when you want a highscore or a database connected
to the puzzle.