Play Sudoku online free in your browser, with no signup and no download. Start with easy Sudoku, move into medium Sudoku or hard Sudoku, adjust the givens before each round, and keep your best runs on your own device.
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. If you want the strongest all-round starting point, use medium 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.
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.
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.
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.
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.
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.
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. For a wider puzzle-library entry, use free Sudoku puzzles.
If you want a memory-focused session instead of Sudoku deduction, switch to Classic Memory, N-back, Memory Path, or Money Counting.
Yes. It runs directly in your browser, so you can play without installing an app or creating an account.
Yes. You can change the difficulty and also adjust the number of givens before each round, so the board can stay lighter or become more demanding.
Use a lower difficulty and raise the givens if you want a cleaner board. For a harder round, move up in difficulty and lower the givens so more of the solve depends on notes and deduction.
Yes. Completed rounds can be saved locally with time, mistakes, difficulty, and givens. The data stays on your device.
Yes. The board and number controls work on phones and tablets as well as on desktop.