Sudoku
Play Sudoku online free — fill every row, column and 3×3 box with 1–9.
Time
00:00
Mistakes
0
Your answer
Mistake
Hint
🏆 Leaderboard
No scores yet. Finish a puzzle to set your best time!
How to play
• Fill the 9×9 grid so each row, column and 3×3 box contains the digits 1–9 exactly once.
• Click a cell, then a number (or use your keyboard) to place it.
• Fix your mistakes and clear cells anytime to keep a perfect board.
• Finish it as fast as you can — lower time is better on the leaderboard.
Frequently Asked Questions
Can I play Sudoku online free?
Absolutely — Sudoku on Braintle is free to play online in your browser, with easy, medium and hard difficulty, hints and a timer.
Is there a download for the Sudoku game?
No. The classic 9×9 Sudoku runs entirely in the browser and works with mouse, keyboard and touch.