ClipArt ETC
A square divided into equal squares, like a chessboard, in each of which is placed one of a series of consecutive numbers from 1 up to the square of the number of cells in a side, in such a manner that the sum of the numbers in each row or column and in each diagonal is constant.

Magic Square

A square divided into equal squares, like a chessboard, in each of which is placed one of a series of…