Actually, I don't think brute forcing to the extent you are describing is necessary. Is there any way you can confirm or deny my hunch that says any 3x3 magic square will have a center value of the magic constant divided by 3? If that assumption holds, I can think of a much smarter way of approaching this.
Update: In the CB, tye has shown that this assumption is true. I believe these squares can be constructed rather than validating random permutations. If I get a chance, I will provide a solution tonight. He also pointed out that you can't have the max nor the min values in one of the corners.
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