How to check if a comon sudoku puzzle is solvable

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jayshields
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Post by jayshields »

Mordred wrote:Right. Just make sure your id column in the database is not int, as the autoincrement will overflow...

http://www.afjarvis.staff.shef.ac.uk/sudoku/

:twisted:
Heh, I've seen that before, but which one of the first two sections are correct? And what's the difference between "different" and "essentially different"?
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Kieran Huggins
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Post by Kieran Huggins »

oh come on.. there are only 5,472,730,538 *really* different puzzles - the rest of the 6,670,903,752,021,072,936,960 are similar enough to ignore! ;-)
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