Sudoku solver

[Chris Angelico]

On Sat, Mar 28, 2015 at 1:09 AM, Dave Angel <davea at davea.name> wrote:
> On 03/27/2015 09:56 AM, Marko Rauhamaa wrote:
>>
>> "Frank Millman" <frank at chagford.com>:
>>
>>> So what I am talking about is called a "satisfactory" puzzle, which is
>>> a subset of a "proper" puzzle.
>>
>>
>> That is impossible to define, though, because some people are mental
>> acrobats and can do a lot of deep analysis in their heads. What's
>> satisfactory to you may not be satisfactory to me.
>>
>> Besides, looking for "satisfactory" patterns can involve a truckload of
>> trial and error.
>>
>
> I know, let's use "regular expressions"  <g>

Part of me is quaking in fear... the other part looking on in morbid
fascination. Can you build a regexp that proves a Sudoku grid
solvable?

OWWWWWWWWWWWWW! Okay, now all of me is quaking in fear. Please do not do this!

Or maybe do. Ow. I can't decide.

ChrisA