Sudoku SB — Free Online Sudoku Game
Play free online Sudoku with 3 chances, daily challenges, hints, streaks and multiple difficulty levels. Sudoku SB is designed for beginners, experienced players and all ages — relaxing enough for a quiet evening, sharp enough to actually challenge you.
A complete Sudoku experience, not just a grid
Sudoku SB is a free online Sudoku game built for both quick daily brain training and longer, focused play — on your phone, tablet or computer.
Free online Sudoku
No sign-up, no payment — just open it and play, on any modern browser.
3 chances
Every puzzle gives you three chances, so you can play confidently without fear of losing instantly.
Daily Challenge
One shared puzzle every day, with a streak that rewards you for coming back.
Six difficulty levels
From Beginner to Master, so the game grows with you as you improve.
Hints
Stuck on a cell? A hint is always one tap away — never required, always optional.
Streak
Track consecutive days played and celebrate milestones as your streak grows.
Relax Mode
Large text, high contrast, and no ticking pressure — built with 50+ players in mind.
Challenge Mode
Speed Challenge mode for players who want a competitive, timed match against themselves.
English / Hindi / Odia voice
Friendly voice guidance in three languages, powered by your device's own voice technology.
Ready to sharpen your mind?
Jump straight into a puzzle, or pick a difficulty that matches how much time you have.
Explore Sudoku SB
Useful guides and difficulty-specific puzzles — pick where you'd like to start.
Frequently Asked Questions
Quick answers about playing Sudoku SB.
What is Sudoku?
Sudoku is a logic-based number puzzle played on a 9×9 grid, divided into nine 3×3 boxes. The goal is to fill every cell with a number from 1 to 9 so that no number repeats in any row, column, or box. It doesn't require math — just logic and patience.
How do I play Sudoku?
Tap an empty cell, then tap a number to place it. Every row, column, and 3×3 box must contain each number from 1 to 9 exactly once. Sudoku SB highlights your row, column and box as you play, so it's easy to see where a number can and can't go.
How many chances do I get in Sudoku SB?
You get 3 chances (shown as hearts ❤️❤️❤️) per puzzle. Each wrong number costs one chance. If you use all 3, you can view the solution or try again — there's no penalty beyond starting that puzzle over.
Is Sudoku SB free?
Yes. Sudoku SB is completely free to play, with unlimited puzzles across six difficulty levels, a Daily Challenge, hints, and voice guidance in English, Hindi and Odia.
Can I play Sudoku on mobile?
Yes — Sudoku SB is built mobile-first for Android and iOS browsers, with a board and number pad sized for comfortable tapping. You can also install it to your home screen as an app.
Can I play Sudoku offline?
Yes. Once you've opened Sudoku SB in your browser one time, the game keeps working without an internet connection, since it saves everything it needs on your device.
What is Daily Challenge?
A new Sudoku puzzle appears every day, the same puzzle for every player that day. Completing it keeps your daily streak going and adds to your Daily leaderboard score.
How does the Sudoku streak work?
Your streak counts consecutive days you've completed the Daily Challenge. Complete today's puzzle to keep it alive; missing a day resets the streak back to a fresh start.
Can beginners play Sudoku SB?
Absolutely. Start with Beginner or Easy difficulty, use the Hint button whenever you're stuck, and read our Sudoku for Beginners guide — it explains everything in plain language, with no math background needed.
Does Sudoku SB support Hindi and Odia voice?
Yes. Sudoku SB includes voice guidance in English, Hindi (हिंदी) and Odia (ଓଡ଼ିଆ), using your device's own built-in voice technology. You can turn voice on or off, and switch languages, any time from Settings.