Sudoku
A fresh Sudoku puzzle every game. Fill the 9×9 grid so every row, column and 3×3 box holds the digits 1–9.
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Tap a cell then a number · arrow keys move · 1–9 fill · Backspace clears
What is the Sudoku?
Sudoku is a logic puzzle played on a 9×9 grid. The goal is to fill every cell so each row, each column and each 3×3 box contains the numbers 1 to 9 exactly once, using the given starting numbers as clues.
This version generates puzzles you can solve right in the browser, with no downloads or sign-up.
How to use the Sudoku
- 1Start a new puzzle — some cells come pre-filled as clues.
- 2Click an empty cell and type the number you think belongs there.
- 3Use logic to make sure no number repeats in any row, column or 3×3 box.
- 4Complete the grid to solve the puzzle.
Key features
- Standard 9×9 Sudoku grid
- Auto-generated puzzles
- Keyboard and click entry
- Plays instantly in the browser
Important notes
- A valid Sudoku has one solution — if you get stuck, re-check for a number repeated in a row, column or box.
- Progress is not tied to an account and resets when you start a new puzzle.
Frequently asked questions
What are the rules of Sudoku?
Fill the grid so that every row, every column and every 3×3 box contains the digits 1 through 9 with no repeats.
Do I need to guess?
No. A well-formed Sudoku can always be solved with logic alone, without guessing.
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Tap any tool to jump straight in — no signup, works on mobile.