Free Sudoku
Play unlimited Sudoku puzzles, easy to hard.
Runs locallyNo uploadPrivate
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About the Sudoku
Play free online Sudoku. Unlimited puzzles in easy, medium and hard, each generated fresh with exactly one solution. Wrong entries are flagged as you go. No sign-up, works great on mobile.
How it works
- 1
Pick a difficulty
Easy, medium or hard.
- 2
Fill the grid
Tap a cell, then a number.
- 3
Solve it
Every row, column and box gets 1–9.
Frequently asked questions
Yes — every puzzle is generated and verified to have exactly one solution, so it's always solvable by logic alone.
Tap an empty cell, then tap a number to place it. Wrong entries show in red; the starting clues can't be changed. Fill the grid so every row, column and 3×3 box has 1–9.
Yes — generate as many new puzzles as you like, free, right in your browser.