Sudoku

How to play

Fill every row, column and 3×3 box with 1 to 9.

No waiting! Everyone fills in numbers whenever they like.

1. Some numbers are printed at the start and can't be changed. Fill the empty cells so no number repeats in a row, a column or a 3×3 box.
2. Tap a cell, then tap a number to fill it in. Tap the same number again, or Erase, to clear it.
3. A number that repeats in its row, column or box is marked, so you can spot it.
4. Not sure yet? Turn on Notes, then tap numbers to jot small guesses in an empty cell. Tap one again to remove it.
5. Hint fills your selected empty cell with the right number. Everyone gets the same number of hints.
6. In the lobby, Mistakes can mark wrong numbers, or give you a limit of 1, 3 or 5. Reach the limit and you lose. When solving together, you share one limit.
7. With two phones, pick Race or Together in the lobby. Race: you each solve the same puzzle, and whoever finishes first wins. Together: you both fill one grid.

Play with a friend

1. Open Recess and choose Sudoku.
2. Tap With a friend. Your table gets a code.
3. Send your friend the code or the link. They join from a browser or the app.

Questions

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