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During my stay in Los Angeles last week, I visited a nephew of mine and noticed that he had solved several of the Sudoku puzzles that appear daily in the LA Times. Not interested in solving a particular problem, I instead thought about how to solve this generally in Maple. Here is a pdf describing my solution and a maple file that implements it. I slightly generalized the problem, allowing any m×m grid. Followup: After posting this, I briefly browsed on the web and found an alternate solution by Doron Zeilberger. Not surprisingly, he also made the generalization to m×m grid.

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