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On Fri, 23 Jan 2009 11:50:41 -0800, Darren New wrote:
> Warp wrote:
>> Thinking about it, in fact I think the only requirement for a sudoku
>> puzzle to be rational is that it must have only one possible solution.
>> As far as I understand, all sudoku puzzles are like that.
>
> I think that while it may be a rule that's the case, it isn't the case
> that such is mathematically guaranteed. In other words, I expect that
> it's not hard to make a sudoku puzzle with multiple solutions, but
> people don't make them like that because that takes the fun out of it?
I've done several where there were clearly multiple solutions -
particularly at easier degrees of difficulty.
Jim
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