Is there a Sudoku so difficult that it can only be solved by exhaustive enumeration?

sudoku
myles325 asked:

Was going to put this in Games, but Sudoku is more a logic puzzle. There are a lot of strategies for solving Sudodu, and I can do all the ones in the newspapers and mags. But the ones on the Net are much harder. Are there ones so hard that no solution can be found except to use brute number-crunching force (by computer) to get a solution?



Comments (2)    Posted in Other - Science    

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2 Responses to 'Is there a Sudoku so difficult that it can only be solved by exhaustive enumeration?'

  1. Nathan G - November 28th, 2008 at 2:42 pm

    the only thing you have to do is read the instruction well and you will find it very easy ,the same thing happened to me and i was able to play it it is very easy i tell you

  2. viewcharts - December 1st, 2008 at 7:25 pm

    This is a very difficult soduko

    ..1.8.6.4
    .376…..
    5……..
    …..5…
    ..6.1.8..
    …4…..
    ……..3
    …..752.
    8.2.9.7..


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