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Omni-MATH / Is it possible to cover a 13×13 chessboard with forty-two pieces of dimensions 4×1 such that only the central square of the chessboard remains uncovered? · Discussion

Discussing Is it possible to cover a 13×13 chessboard with forty-two pieces of dimensions 4×1 such that only the central square of the chessboard remains uncovered? · Omni-MATH

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