Logic games / Free tool
Sudoku 9 × 9
Generate a new uniquely solvable Sudoku, with checking, hints and a timer.
Fill each row, column and 2 × 2 box with 1–4 exactly once. Check your answer or reset and try again.
Logic games / Free tool
Generate a new uniquely solvable Sudoku, with checking, hints and a timer.
Fill each row, column and 2 × 2 box with 1–4 exactly once. Check your answer or reset and try again.
Google provides the advertising consent message. This separate panel controls local tool preferences only. Tools run in your browser. We store this privacy choice on your device. Optional preference storage can be allowed or declined; all tools remain free and usable.
Advertising is currently off. This panel does not grant consent for Google advertising. Read the privacy policy.