ONE GRID. A LITTLE CLEAR THINKING.

Free daily Sudoku

Fill each row, column and 3 × 3 box with 1–9, once each. Wrong entries are highlighted; the third mistake ends the game.

A fresh puzzle every day, at three difficulty levels. Your progress saves on this device—come back whenever you have a few quiet minutes.

Mistakes: 0 / 3

Your current puzzle saves automatically on this device. Return here to continue.

The daily puzzle archive

Choose a date from the past 30 days. Each date and difficulty has its own puzzle, with progress saved separately on this device.

Dates follow your device’s calendar. Browser storage can be cleared; progress does not sync between devices.

How to play & how puzzles work

Select a square, then tap a number. With a keyboard, use the arrow keys, 1–9, Delete to erase and N to toggle notes. Fixed clues cannot be changed. Notes are your own pencil marks; they are not automatically removed. Undo works during this visit. Check reports incorrect entries without changing them; Hint fills one correct number and can be undone.

Every generated puzzle is checked to have exactly one solution. Difficulty is based on the number of starting clues: easy aims for 44, medium 36, hard 28. Some puzzles retain more clues to preserve one solution. This is a clue-count guide, not a guarantee of the solving techniques required.

The daily puzzle uses your device’s calendar date and chosen difficulty. New puzzle starts free play. The most recent puzzle reopens automatically. Daily puzzles from the past 30 days also save separately by date and difficulty; starting another free-play puzzle replaces the previous free-play save. Storage can be cleared by your browser. No account, score uploads or advertising tracking is required.