How do you verify, that there is no error (made by the creator of the sudoku) in the sudoku you are planning to solve?

How do you verify, that there is no error (made by the creator of the sudoku) in the sudoku you are planning to solve?
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1 Answer

Answer :

answer:No good way. As far as I know, its NP-Complete (aka Hard). There are sudoku solvers out there. You can probably feed your particular puzzle into one of them and see if it can find a (unique) solution. Some of them probably will check without giving you the answer. P.S. If you are into programming, a sudoku solver isn’t too hard to write.
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