THE ancient problem: To construct a Magic Square with sixteen consecutive integers, may be regarded as a special case of the general problem: To construct a Magic Square with any sixteen positive ...

1 Department of Chemistry and Nanoscience, GLA University, Mathura, India. 2 Agriculture and Ecology Research Unit, Indian Statistical Institute, Kolkata, India. British mathematician Andrew Wiles ...

Still, Larsen’s most recent obsession felt different, “longer and more intense than most of his other projects,” she said. For more than a year and a half, Larsen couldn’t stop thinking ...

Long before the Sudoku number puzzle became the crack cocaine of brain teasers, a bored Benjamin Franklin jotted down a couple of much more complex number puzzles of his own. But, exactly how the ...