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"Magic squares cornered," by Martin Gardner. Nature, 17 September 1998, pages 216-217.
Magic squares have fascinated mathematicians for centuries, and developments in the theory are still being made. Developed in China 25 centuries ago, a magic square is an n x n array of distinct integers such that each row, column, and main diagonal have the same sum.
At the age of 85, Dame Kathleen Ollerenshaw has extended the limits of the subject. In a book written with David Bree, Dame Kathleen resolves some big questions about so-called "most perfect" squares, giving a solution to one of the most challenging problems in magic-square theory.
--- Benjamin Stein
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