## Magic square

Its really easy to make a magic square: one where the horizontal totals and the vertical totals all add up to the same number. For example, here is a 5×5 magic square:

How to build one such magic square? You could build a 3×3, or a 7×7 one for example. The rules:

1. Start with writing 1 in the middle square

2. Keep moving diagonally upwards, increasing the number by 1 each time

3. If you move out of the square, roll over

4. If you hit a square already filled, move vertically downwards one square and keep moving

All the best!

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