Start with a puzzle
There is no rush. Choose how you would like to play.

Free online Sudoku

SudoSketch

A calmer way to play Sudoku online. Choose a puzzle, write naturally and solve at your own pace.

Today’s Puzzle

A fresh daily Sudoku at every level. Pick one and make it yours.

A quiet corner for clean solves

Play free Sudoku online

SudoSketch is a free online Sudoku game designed to feel closer to solving Sudoku on paper. Instead of relying purely on tapping tiny buttons, you can write numbers directly into the Sudoku grid using handwriting input.

Whether you are learning Sudoku for the first time or already deep into advanced logic techniques, SudoSketch gives you a clean, modern way to play Sudoku online with notes, highlighting, daily challenges and multiple difficulty levels.

Play beginner Sudoku, easy Sudoku, medium Sudoku, hard Sudoku, master Sudoku and insane Sudoku directly in your browser with no download and no account required.

Made for unhurried solving

Write

Handwriting input

Write directly in the grid with your finger, stylus or Apple Pencil.

Solve

Smart Sudoku tools

Notes, highlights and optional checks are there when you need them.

Coach

Learn the logic

Learn the next logical step without being handed the whole answer.

Sudoku built for proper solving

Good Sudoku is not only about removing more numbers from the grid. Real Sudoku difficulty depends on the logic required to solve the puzzle.

SudoSketch is designed around proper Sudoku solving progression, from simple scanning and singles through to advanced deduction and deeper logic techniques.

Easy Sudoku puzzles focus on accessible solving and confidence building. Medium Sudoku introduces more deliberate candidate work. Hard Sudoku and master Sudoku push logical deduction further, while insane Sudoku is built for experienced players who enjoy advanced solving techniques and deeper logic chains.

Every Sudoku puzzle is designed to feel fair, logical and satisfying rather than random or guess-based.

Choose your difficulty

Beginner

Start with confidence

A comfortable place to learn the rhythm of the grid.

Beginner Sudoku
Easy → Insane

Build the challenge

Move from easy to medium, hard, master and insane when you are ready.

Explore Levels
Daily

Come back tomorrow

A fresh puzzle will be here when you feel like coming back.

Daily Sudoku
Coach

Get unstuck thoughtfully

Coach explains the next useful piece of logic, so the puzzle still feels like yours.

Sit with Coach
Learn

Improve one technique at a time

Short, plain-English guides help you recognise patterns with more confidence.

Explore techniques

Sudoku FAQ

Can I play Sudoku online for free?

Yes. SudoSketch is completely free to play online with no sign-up required.

Does SudoSketch support Apple Pencil?

Yes. SudoSketch supports Apple Pencil, stylus and finger handwriting input.

What Sudoku difficulty levels are available?

Beginner, Easy, Medium, Hard, Master and Insane Sudoku puzzles are available.

Can I play on mobile and tablet?

Yes. SudoSketch works across desktop, laptop, tablet and mobile browsers.

Keep exploring

Learn Sudoku Sudoku techniques Handwriting recognition Difficulty grading