Magic squares

A magic square is a 3 by 3 grid of numbers where every row, column and diagonal adds up to the same number. In this case, the digits in the grid are the numbers 1 to 9.

For each difficulty level, you are given less pre-filled numbers.

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Difficulty Levels :

1: 5 numbers completed to help you
2: 4 numbers completed to help you
3: 3 numbers completed to help you