Sudoku Solver
Sudoku Solver reads a Sudoku puzzle from a photo, lets you check and fix the digits it found, and fills in the solution. You can also type a puzzle in by hand.
Who it is for
- Puzzle fans who are stuck on a newspaper or book Sudoku and want to see the answer.
- Anyone checking their own solution against the correct one.
- People curious about phone text recognition, since the whole process happens on the phone.
What it does
| Step | What happens |
|---|---|
| Scan | Take a photo with Camera, or pick one with Upload. |
| Crop | Drag the corners so the frame covers the 9×9 grid. |
| Check | The digits it recognised fill the board. Fix any that were misread. Conflicting digits turn red. |
| Solve | Tap Solve and the empty cells fill in. |
The solver checks the puzzle first. If two clues clash, or the puzzle has no solution, it tells you instead of showing a wrong answer.
Privacy
Text recognition runs on the phone with Google ML Kit. The photo is not uploaded, and the temporary copy used for reading is deleted afterwards. There is no account and nothing to sign in to.
Platforms
Sudoku Solver runs on Android. The source code and the issue tracker are on GitHub.