Free Online Sudoku
Play unlimited puzzles from gentle to fiendish, learn every solving technique, and sharpen your logic — all in one calm, fast, distraction-free place.
Brilliant!
Where would you like to start?
Pick your level
From a gentle easy Sudoku to a fiendish evil grid, every level plays the same clean way.
Easy →New to Sudoku?
Learn how to play in two minutes with a worked example.
How to Play →Solving techniques
Master every method, from scanning to the X-Wing.
Techniques →Ready for a challenge?
Step up to hard, expert and evil puzzles that demand real logic.
Hard →Daily Sudoku
The same five puzzles for everyone today — one per level, new every day.
Daily →Stuck on a puzzle?
Enter any Sudoku and let the solver explain the next logical step.
Solver →Prefer paper?
Print fresh puzzles, one to six per page, with an answer key.
Printable →Sudoku tips
Practical habits that make every solve faster and calmer.
Tips →Play Sudoku online, free
Sudoku is a logic puzzle played on a 9×9 grid divided into nine 3×3 boxes. Fill every row, column and box with the digits 1 to 9 — each digit appears exactly once in each. That is the whole game: no arithmetic, just deduction.
Sudoku.tips keeps it pure. Every puzzle has exactly one solution and is graded by a solver that uses human techniques only, so the difficulty label tells you which techniques you will actually need — and there is always a path to the answer using logic alone, never guessing. Pencil marks that tidy themselves, undo, instant mistake flagging, peer highlighting and full keyboard support make solving fast and comfortable on phone, tablet or desktop.
Pick a difficulty to start, or learn the rules first. No account, nothing to install, and no ads getting in your way.