Each cell in a Sutriku puzzle contains a 1, a 2 or a 3.

In each row, column or (yellow or green) 3x3 block, exactly three 1's, three 2's and three 3's are needed.

Tap or click a cell to select the desired number. If you continue tapping/clicking after the 3, the cell content will cycle through 12, 13 and 23 which can be used to indicate which number is impossible for that cell. The Reverse button will cycle the last clicked/tapped cell content backwards.

Click the New Game button below to get a random puzzle and find the unique solution!

Or use the Challenge button to try and beat someone else's best time on a Sutriku they solved.

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