Free Sudoku: Daily Puzzle + Easy to Expert
Play unlimited free sudoku puzzles in four difficulty levels, plus a fresh Daily Sudoku every day. Every puzzle has exactly one solution. Pencil notes, hints, undo and auto-save make it the most comfortable sudoku on the web.
How to play Sudoku
- Fill every row, column and 3×3 box with the digits 1 to 9.
- Each digit can appear only once in each row, column and box.
- Tap a cell, then tap a number (or type 1–9 on your keyboard).
- Switch on ✏️ Notes to pencil in candidates.
- Three mistakes and the puzzle is over — or turn off the mistake limit in relaxed mode.
Tips & strategy
Start with singles
Look for a row, column or box that's missing just one or two numbers.
Scan by number
Pick a digit and find every box where it can only go in one cell.
Use notes for hard puzzles
Pencil in candidates, then look for pairs that eliminate options elsewhere.
Frequently asked questions
Is this sudoku free?
Yes, unlimited and free with no sign-up.
Is there a daily sudoku?
Yes — a new Daily Sudoku every day, the same puzzle for every player.
Does every puzzle have one solution?
Yes. Every generated puzzle is checked to have exactly one unique solution.
Can I play with a keyboard?
Yes: arrow keys to move, 1–9 to enter, Backspace to erase, N for notes, Ctrl+Z to undo.
