Sudoku Solver
Enter the current grid, check whether it has a unique solution, and ask Math9 for the next logical step with a clear explanation.
Enter a 9x9 grid manually from a book, website, or app.
Upload a Sudoku screenshot or scan with your camera, then correct the grid by hand.
Check uniqueness and get one explainable next step at a time.
When to use it
- Confirm whether a Sudoku puzzle has one solution.
- Get unstuck with reasoning instead of jumping straight to the answer.
- Import a puzzle quickly from an image or phone screenshot.
FAQ
Does the Sudoku solver reveal the whole answer?
Math9 first checks whether the grid has a unique solution, then gives the next explainable step for the current position.
Can it read Sudoku from an image?
Yes. Upload a screenshot or use camera capture on supported devices, then correct the grid manually if needed.
Can I type the puzzle manually?
Yes. Click the board and number keys to enter the givens, and undo automatic solving steps when needed.