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Play Sudoku online, train your brain.

Free classic Sudoku with five difficulty levels, a new daily challenge and hints that explain the logic behind every move. Play Sudoku online or offline and train your brain, one grid at a time.

Play nowToday's challenge
difficulty levels
5
difficulty levels
solving techniques
10
solving techniques
languages
3
languages

Your dashboard

Pick up where you left off and keep an eye on your progress.

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Daily challenge

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Leaderboard

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Choose your challenge

From relaxing to fiendish: every puzzle has exactly one solution, reachable by logic alone.

  • Easy

    Singles only. Perfect for learning and a relaxing break.

  • Medium

    Adds pointing pairs and box/line reductions.

  • Hard

    Naked and hidden pairs and triples come into play.

  • Expert

    Needs advanced patterns like the X-Wing and the XY-Wing.

  • Master

    The fewest clues and every technique. A true test.

Everything you need to play better

Built for players who want to improve, not just fill in numbers.

  • Hints that teach

    Each hint names the technique and explains why it works, so you learn instead of guessing.

  • Plays offline

    Install it like an app. Puzzles are generated on your device, with or without a connection.

  • Three languages

    English, French and Arabic, with a fully right-to-left layout in Arabic.

  • Daily challenge

    One new puzzle every day. Build a streak and earn a badge for every complete month.

  • Leaderboard

    Verified scores, weekly and all-time rankings, and a race on every daily puzzle.

  • Easy on the eyes

    Light and dark themes, clear highlights and full keyboard support.

How it works

  1. 1

    Pick a level

    Start easy or jump straight into an expert grid.

  2. 2

    Solve by logic

    Fill the grid so every row, column and box holds 1 to 9 once.

  3. 3

    Learn and climb

    Use hints to learn new techniques, then race up the leaderboard.

Ready for your next grid?

No account needed to play. Sign in whenever you want to keep your score.

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