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The Magic Square

A magic square is a square grid of numbers, in which each number appears once and the numbers in each row, column, and the two main diagonals sum to the same value. The most common magic square uses consecutive integers from 1 to n, where n is the number of cells in the square.

Try your hand at completing a magic square. In the grid below, insert the numbers from 1 to 9 (each only once) in the yellow squares, so that the sum of each row, column, and the two main diagonals is 15 (their sums are shown in the white squares). If you're stuck, click the Solve It button. To reset the grid, click the Restart button.

The Magic Square