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Play Sudoku Online

Play a complete 9x9 Sudoku with row, column, and 3x3 box structure, three clue levels, selectable cells, on-screen and keyboard number entry, clearing, immediate mistake feedback, filled-cell tracking, completion detection, and restart. Play free with no account or download.

Choose puzzle level

Single-player puzzle

No multiplayer mode

Your turnScore 0

How to play

Play a complete 9x9 Sudoku with row, column, and 3x3 box structure, three clue levels, selectable cells, on-screen and keyboard number entry, clearing, immediate mistake feedback, filled-cell tracking, completion detection, and restart. Choose a puzzle level, make your move, and use Restart whenever you want a fresh game.

Strategy tips

  • Each row, column, and outlined 3 by 3 box must contain every digit from 1 through 9 exactly once.
  • Start with cells whose row, column, or box leaves only one possible digit.
  • Use Clear to revise an editable cell; given clues remain locked throughout the puzzle.

FAQ

Is Sudoku free?

Yes. It is free to play in your browser.

Do I need an account?

No account or email is required.