Re: A SuDoKu question

["Proginoskes"]

Bob Kolker wrote:
> To check to see if a proposed solution is really a solution one can
> check all the rows , all the columns and all the sub boxes for
> non-repitition. Is all this checking necessary to establish correctness?
> What is a procedure with minimal steps to check the correctness of a
> SuDoKu solution?

In my experience, if I make a mistake in Sudoku, I catch it fairly
quickly; before the next three or four numbers.

     --- Christopher Heckman