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The fantastic square, the math enigma of “Le Monde” n° 61

The fantastic square, the math enigma of “Le Monde” n° 61

Are the shortest riddles to solve also the shortest to solve? It's up to you to decide...

Can you write the numbers 1 to 9 in these nine circles, so that whenever four of them form the vertices of a square, their sum is always the same?

Find the previous puzzles by clicking here

Le Monde

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The fantastic square, the math enigma of “Le Monde” n° 61

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