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Play Sudoku Online

Fill the grid so every row, column and box holds each number once. Fill the grid so every row, column and box holds each number once. Start with a gentle 4×4 warm up, then move to the classic 9×9, with endless puzzles, notes and hints.

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About Sudoku

Sudoku is the world’s most popular number logic puzzle. You are given a grid partly filled with numbers, and your job is to complete it so that every row, every column and every outlined box contains each number exactly once. There is no maths and no guessing. Every puzzle is solved with pure deduction, which makes it a great way to give your brain a calm workout. On WishnPlay you can play this free Sudoku game online instantly, with no download and no sign up.

Pick the difficulty that suits you on the start screen. The gentle 4×4 grid has 2×2 boxes and is perfect for beginners and kids, so it works well as an easy Sudoku puzzle to learn on. The middle ground 6×6 grid has 2×3 boxes, and the classic 9×9 grid with 3×3 boxes is the full challenge. Every board is freshly generated and guaranteed to have a single unique solution, so you will never play the same puzzle twice. It is a simple online Sudoku game you can open any time.

Why players love it

Why players love Sudoku

Simple to pick up, easy to love.

Three difficulties

Ease in with 4×4, step up to 6×6, or take on the classic 9×9 grid.

Unlimited puzzles

A fresh, uniquely solvable board every time, so you never get the same puzzle twice.

Auto saved boards

Leave mid puzzle and come back. Your grid resumes exactly where you left off.

Hints when stuck

A gentle nudge places a correct number so you never hit a dead end.

Pencil mark notes

Jot candidate numbers into cells, just like on paper.

Free and no sign up

Play instantly in any browser on phone, tablet or desktop.

Play Sudoku

Why play Sudoku?

Sudoku is the perfect pocket sized brain workout. The rules take seconds to learn, yet every puzzle rewards patience, focus and clear logical thinking. It is a calming, screen friendly way to sharpen concentration and pattern recognition in a spare few minutes, on the bus, in a queue or with your morning coffee. Because each board is generated fresh and auto saved, you can dip in and out as often as you like and always come back to exactly where you were. Free, instant and endlessly replayable, that is why Sudoku has stayed a favourite for so long, and why we love having it on WishnPlay.

How to play

How to play Sudoku Game

Pick a cell: Tap an empty square, then choose a number from the pad below the grid.
One of each: Every row, every column and every box must contain each number exactly once.
Use notes: Not sure yet? Switch to notes and pencil in the candidates for a cell.
Take a hint: Stuck? A hint drops a correct number into the grid to get you moving again.

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Tips & tricks

Sudoku tips & strategy

Scan for singles: Look for a row, column or box that is almost full. Often only one number can go in the last empty cell.
Work the boxes: Pick a number and see which boxes still need it. Cross out rows and columns where it already appears to pin down its spot.
Use notes: When a cell has several candidates, pencil them all in. The answer often becomes obvious as you fill the neighbours.
Never guess: Every puzzle here has one logical solution. If you are tempted to guess, there is usually a deduction you have missed.
Start small: New to Sudoku? Warm up on the 4×4 and 6×6 grids before taking on the classic 9×9. WishnPlay lets you switch size any time.

FAQ

Frequently Asked Questions

Quick answers before your first grid.

Play Sudoku

Sudoku is a logic puzzle played on a 9 by 9 grid. You fill in the empty squares so that every row, column and 3 by 3 box has the numbers 1 to 9 exactly once.

Yes, it is completely free. There is no download and no sign up. Open the page and start playing.

Yes, it works on phones, tablets and computers, right in your browser.

You can start right here. Pick the easiest level, begin with the rows and boxes that have the most numbers, and take your time.

No. Sudoku uses numbers, but you never add or subtract. It is all about logic and spotting where each number can fit.

Practice a little each day, start with easy puzzles, and learn to scan one number at a time. As you improve, move up to harder levels.

Yes, you can choose from easier puzzles to harder ones, depending on how much challenge you want.