Sudoku Online Free

Play Free Sudoku Online in Your Browser

You can open a fresh 9x9 board here and start right away. There is no signup, no download, and no account layer between the page and the puzzle. If you want the easiest entry, start with easy Sudoku.

Easy, Medium, and Hard Sudoku

The board controls let you change the feel of the round without leaving the page. More givens make the start cleaner. Fewer givens leave more deduction work and push the round closer to medium Sudoku or hard Sudoku.

Easy Sudoku for Fast Warmups

If you want a quick round or a clearer board, use higher givens and beginner difficulty. The dedicated easy Sudoku page already opens with that setup.

Medium and Hard Sudoku for Longer Logic Sessions

When you want a longer logic session, lower the givens and move up the difficulty ladder. The same setup supports medium Sudoku and hard Sudoku without pushing you into an app.

Notes, Hints, and Mistake Tracking

Use notes to track candidates, erase entries when your read changes, and undo recent moves if you want to back up. If a board stalls, you can use a hint on an empty cell. The mistake counter keeps each round readable instead of turning it into guesswork.

Sudoku Puzzle Controls That Stay Simple

The core actions stay close to the board: number input, notes, erase, undo, and hint. The goal is a clean puzzle flow, not a cluttered control panel.

Local Progress Without an Account

Finished runs can be saved locally with time, mistakes, difficulty, and givens. The results stay on your device, so you can compare boards over time without creating a profile.

Daily Sudoku Style Practice Without the App Friction

If you like daily Sudoku habits, this works well in the browser. Open a board, play one round, and restart when you want the next one. If you want a more routine-focused entry, use the dedicated daily Sudoku page.