Authors: Lincoln French
We attempt to prove that no order-3 magic square can be constructed using 7, 8, or9 distinct nonzero perfect square numbers. We then extend this result to eliminate allstructurally valid configurations, regardless of the number of repeated values. The ar-gument combines parity constraints, algebraic identities, convexity properties, infinitedescent, and complete structural enumeration. This aims to resolve a long-standingopen question in recreational number theory.
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