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Sudoku

Solve a classic 9×9 Sudoku by logic alone — no guessing required.

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Fill the grid so each row, column, and box contains 1–9 without repeats.

What this tool does

Sudoku helps you solve a classic 9×9 Sudoku by logic alone — no guessing required.

What you get

Sudoku produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.