5 tries.
3 rows.
3 columns.
How many can you get to equal 6?

Tap a cell to increment it to the next value: 1 to 2, 2 to 3, and 3 to one.
Each tap is one attempt.
Rows or columns that equal 6 will give points and pick new numbers.
If you get a valid row you'll get your attempt back.

You can create an account to save your scores across devices (and access the history on the website).
Or you can just play locally where the score is persisted to device storage.