I've discovered Su Doku. Apparently the puzzles originated in Switzerland,
but only became popular in Japan within the past few decades, hence the
Japanese name for them. In the last few years they have arrived in the UK,
just about every British newspaper has one, and there are plenty of
"collected" puzzle books to choose from too. They are even in Linux
magazines, Linux Format is offering a £500 bounty for a nice
Linux program to generate and solve them for you.
posted 21:24 ::
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^