HintsSudoku
Take your time. Find the next logical step.
How to play
- Select an empty cell.
- Fill each row, column and box with 1–9.
- Complete your puzzle at your own pace.
No sign-up. Just a little play.
A closer look at Sudoku
Rules and scoring
- Fill every row, column and 3×3 box with the digits 1–9, without repeating a digit.
- Given digits cannot be changed. Select a cell, then use the number buttons or keyboard to fill it. Use Erase or Delete to clear it.
- Only direct repeats are marked. A digit is not marked just because it differs from the solution.
- Finish a valid board to keep a personal completion record. There is no timer or public leaderboard.
Try an example
If a row contains 1, 2, 3, 4, 5, 6, 7 and 8, its only missing digit is 9. Before filling the empty cell, check that its column and three-by-three box also allow 9. More often several candidates remain: use the other cells in the row, column and box to rule them out one at a time.
An approach to try
Start with rows, columns or boxes that already contain many given digits. Notes can help you remember candidates, but the given digits cannot be changed. Only direct repeats are marked; an unmarked entry is not a promise that it matches the solution. Use Erase or Undo when revising your reasoning. Sudoku is untimed and records personal completions rather than a public leaderboard score.
Play for a challenge or a short break. Results describe a game, not your intelligence or cognitive health. You can play available Minis as a guest; signing in lets you keep confirmed saved results.