Expert sudoku
Play online36,613 expert puzzles · about 28 clues each
Expert sudoku — play free online
Very hard puzzles for experienced solvers. Long stretches with no obvious move, where the way forward is a wing, a chain or a rare pattern.
- Free, no sign-up, no ads
- Pencil marks, undo and 3 hints per puzzle
- Your game is saved if you leave and come back
What to expect from expert sudoku
Expert puzzles are rated 3.5 and above on the Sudoku Explainer scale. They regularly need XY-Wings, forcing chains and patterns such as Sue de Coq, and sometimes several of them in one grid. They are still solvable by logic alone — no guessing required.
New to a technique? Each one is explained step by step, with a diagram and practice puzzles, in the free Sudoku Academy.
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Expert sudoku FAQ
How hard is expert sudoku?
Very hard. Expert puzzles are rated 3.5 or more on the Sudoku Explainer scale and need advanced techniques such as XY-Wings and forcing chains that many casual players have never used.
How long does an expert sudoku take?
Often 30 minutes to over an hour. Strong solvers who know the patterns can be much faster.
Is expert sudoku solvable without guessing?
Yes. Every expert puzzle has a single solution reachable by logic. If you want puzzles that go beyond pure logic, try evil sudoku.
Can I race other players on expert sudoku?
Yes. With a free account you can play ranked 1v1 matches in the Expert division, with its own ELO rating and monthly league table.
Keep your streaks and stats
A free account saves your solo games, daily streaks and ratings. No ads.
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