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Entrance > Main hall > Corridor > Sum zero

Professor Albuquerque is dealing with a complicated spell!

Coming from nowhere, the numbers keep falling in his office and are piling up all over the place.

The green numbers are positive. The red numbers are negative.

If the vertical sum of the numbers is equal to zero, the numbers in that column disappear.

The more numbers you eliminate, the higher is your score.

You can move the numbers left and right with the left arrow key and the right arrow key.

If you press the down arrow key, the numbers fall faster.

If you press the space bar, the numbers fall immediately.

Do you want to help Professor Albuquerque to get rid of the numbers?

Highest scores
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