After scaling up 4x4 magic squares to 8x8, he creates puzzles out of them. Mahesh has worked on all the 880 magic squares of the order-4 that are classified into 12 groups.

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.

Using Franklin's rules, there are 1,105,920 variations of his magic square. That is according to Peter Loly, a professor in the University of Manitoba's department of physics and astronomy, ...