Oliver Bandel wrote:
> Well, yesterday was the first time I had contact to Sudoku at all.
> I looked for pTeX, the japanese descendant of TeX and found this page:
> 
>   http://www.users.waitrose.com/~nihilist/sudoku.html

Cool, the page shows a "difficult" puzzle. My non-brute force version
finds a solution in 0.00s ;-) and my brute force version takes 45s.

Next task: compute the number of solutions for this puzzle.

Ok, I think we're off-topic...

-- Alain