Start your week off right with a new Monday Math Square for today'sĀ mentalfloss.com **Brain Game.** Good luck!

The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear *only once* in this main grid (the red square). Place the digits 1 through 9 in their correct spots so that the mathematical equations work both across and down.

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**NOTE: **These puzzles rarely (but occasionally) have alternate solutions that fit the rules. If you find one of these, **first make sure that you've followed the instructions to the letter, **then pat yourself on the back (and feel free to share your numbers with us in the comments).

**THE SOLUTION:**

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