Beginner
New to Sudoku?
Start with beginner Sudoku puzzles designed for learning scanning, simple logic and confident first solves.
Free online Sudoku
Play Sudoku Online for Free
Solve clean, modern Sudoku puzzles directly in your browser. Choose from Beginner, Easy, Medium, Hard, Master and Insane levels, play daily Sudoku challenges and use keypad, touch or handwriting input.
Free Sudoku you can play instantly
SudoSketch is a free online Sudoku game built for quick, focused solving. There is no account required, no download needed and no complicated setup. Open a puzzle, choose your difficulty and start solving.
You can play using classic keypad controls, touch input, mouse, finger, stylus or Apple Pencil. The aim is simple: make online Sudoku feel clean, calm and natural instead of cluttered and fiddly.
Whether you want a relaxed easy Sudoku puzzle with a cup of tea or a harder grid that quietly ruins your confidence, SudoSketch gives you a proper range of Sudoku challenges.
Choose your Sudoku difficulty
Easy → Hard
Everyday Sudoku
Play easy, medium and hard Sudoku puzzles for regular practice, daily solving and steady improvement.
Master
Advanced Sudoku
Try Master and Insane Sudoku when you want deeper logic, tighter candidate work and a sterner talking-to from a 9x9 grid.
Why play Sudoku online?
Online Sudoku is convenient, fast and easy to play anywhere. You can start a puzzle on desktop, tablet or mobile without needing a printed grid, pencil or eraser.
Digital Sudoku also adds useful solving tools. Notes help track candidates, highlighting helps spot patterns and optional mistake checking can help newer players learn without turning the puzzle into a guessing game.
SudoSketch keeps these tools deliberately simple, so the board stays calm and readable while you solve.
SudoSketch features
Clean
Minimal Sudoku board
A focused interface designed to keep attention on the grid, not on noisy buttons, adverts or visual clutter.
Tools
Notes and mistake checking
Use notes, undo, highlighting and optional mistake checking to support proper logical solving.
Handwriting
Optional handwriting input
Write directly into the Sudoku grid using finger, stylus or Apple Pencil for a more paper-like solving experience.
Daily Sudoku challenges
SudoSketch includes daily Sudoku challenges so you can return each day for a fresh puzzle. Daily puzzles are available across multiple difficulty levels, making them useful for casual players and experienced solvers alike.
Clean solves can be submitted to the daily leaderboard, giving each puzzle a small competitive edge without getting in the way of relaxed play.
If you like a daily ritual, Sudoku is a very good one: quiet, logical and slightly less alarming than checking the news first thing.
Popular Sudoku pages
Stylus
Apple Pencil Sudoku
Play Sudoku using Apple Pencil, stylus or finger handwriting input.
Daily
Fresh puzzle every day
Try today’s daily Sudoku challenge and compare clean solve times.
Play
Start instantly
Jump straight into the Sudoku board and begin solving immediately.
Start a free Sudoku puzzle now
No sign-up. No download. Just a clean Sudoku grid and your next mildly unreasonable obsession.
Free online Sudoku FAQ
Can I play Sudoku online for free?
Yes. SudoSketch is free to play online directly in your browser with no account required.
Do I need to download anything?
No. SudoSketch runs in a modern web browser, so you can start solving without downloading an app.
What Sudoku levels are available?
You can play Beginner, Easy, Medium, Hard, Master and Insane Sudoku puzzles.
Can I use notes?
Yes. SudoSketch supports notes, undo, highlighting and optional mistake checking.
Can I play on iPad or mobile?
Yes. SudoSketch works across desktop, tablet and mobile browsers, with handwriting support available for finger, stylus and Apple Pencil input.