Sudoku

Settle in with a clean 9×9 grid. Every puzzle has one answer, with no timer or pressure.

Difficulty

Choose an empty square, then enter a number.

Start with certaintyLook for rows, columns, or boxes where only one number can fit.

Use candidatesSwitch on Candidates to keep small notes without committing to an answer.

Mistakes stay gentleIncorrect entries are highlighted, and Undo is always available.

Help us improve

Something did not feel right?

Report a blocked move, possible dead end, rule question, or display problem. No account is required.

Play together

Share a personal link—no account required. When a friend starts playing, the visit is credited to your anonymous invite code.

What players are enjoying

Ranked by anonymous first-time players; each game counts once per device