Sudoku
A little puzzle break from The TFD Blog.
A little puzzle break
Sudoku, at your own pace.
Choose a daily challenge or settle into Free Play. No timer, no signup. Just numbers and a little concentration.Daily or Free Play. No timer.
Select a square, then use the number pad or type 1–9. Arrow keys move between squares; Delete clears an entry.
Choose an empty square to begin.
How to play
- Fill every row, column and 3×3 box with the digits 1–9, using each digit once.
- Grey squares are fixed clues. Your entries appear in pink.
- Notes lets you jot down possible numbers. Switch it off to enter your answer.
- Check marks incorrect filled entries with an exclamation mark without revealing answers.
- Daily Challenge allows three hints. Used hints stay used after reload, undo or restart; revealed daily hints stay in place. Free Play hints are optional and unlimited.
- Complete any daily difficulty on its own day to extend your streak. Multiple difficulties count as one streak day. Daily puzzles change at midnight in London.
- Easy uses singles; Medium adds pairs and locked candidates; Hard needs more advanced deductions.
Progress, hints, completed daily puzzles and streaks are saved only in this browser. No account needed.