Sudoku is the classic number puzzle you already know — now perfectly built for the web. Use Number Sudoku to play at your own pace, train your brain daily, and challenge yourself across all difficulty levels.
Play Sudoku NowSudoku is a simple logic puzzle: fill a 9×9 grid so every row, column, and 3×3 box contains the digits 1–9 exactly once. No math required — just pure pattern thinking. Online Sudoku is the same game, but better — no erasing, no paper, and auto-error checking so you always know if you're on the right track.
Most Sudoku sites are cluttered with popups and forced logins. Number Sudoku is clean, fast, and gets you playing in one click.
Whether you're picking up Sudoku for the first time or you've been solving for years, there's a level for you. Start easy, build confidence, then push yourself harder.
Yes, 100% free. No subscription, no premium plan, no login needed. Just open the site and play.
No signup required. Click "Play Now" and you're in the game immediately.
Every day at midnight, a brand new Sudoku puzzle is published. It resets every 24 hours — a fun daily habit for Sudoku lovers.
Yes. Number Sudoku is fully optimized for mobile. The numpad, grid, and controls all work perfectly on touchscreens.
Start with Easy — it has many pre-filled numbers to guide you. Once you can finish Easy comfortably, move up to Medium.
Toggle Notes on in the game toolbar. Clicking a cell and pressing a number adds it as a small pencil mark — just like writing candidates in a paper puzzle book.