The Sudoku CHAMBER
Difficulty
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Time 00:00
Mistakes 0
START A PUZZLE

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The timer begins with your first input. Sign in to earn points and preserve streaks.

FREE SUDOKU IN YOUR BROWSER

Free Sudoku online

Play beautifully crafted Sudoku puzzles without downloading an app. Choose from Easy, Medium, Hard, Expert, Evil and Hell, or solve the shared Daily Challenge.

Six difficulty levels

Begin with direct, approachable puzzles or progress to sparse grids that demand deeper logical deduction.

Compare Sudoku levels →

Daily puzzles and streaks

Return for one community puzzle each day. Signed-in players can preserve a streak, earn points and compare rankings.

Explore the Daily Challenge →

Learn as you play

Use candidate notes, hints, undo and pause. New players can learn the rules before starting an Easy puzzle.

Learn how to play Sudoku →

START OVER

Restart this puzzle?

Your entries and notes will be cleared. Your elapsed time will continue from its current value.

PUZZLE COMPLETE

Excellent!

You made that puzzle look easy.

Medium · 00:00 · 0 mistakes

THE RULES

How to play Sudoku

Fill every empty square so each row, column and 3 × 3 box contains the numbers 1 through 9 exactly once.

YOUR PROGRESS

Statistics

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0Solved
0%Win rate
0Daily streak
0Total points

Personal best

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Hard—
Expert—
Evil—
Hell—
Daily—

THE CHAMBER LADDER

Leaderboards

Every difficulty contributes to one overall league. Faster, cleaner solves earn more weekly points, with a bonus for the Daily Challenge.

Global shows the top 50 players in your current league and updates daily.

Loading rankings… Pearl · Sapphire · Emerald · Ruby · Diamond

PLAYER ACCOUNT

My Chamber

Sign in to preserve your streak, collect points and join the social leaderboard. Your account is created automatically on first sign-in.

MEMBER PERSONALISATION

Puzzle styles

Choose how the board and numbers look. Your choices follow your signed-in account.

Board style
Number style