About this app

No papers! No pencils! Play free online sudoku puzzles to train your brain and build your memory with logic at Happy Sudoku - designed for both beginners and advanced players with various features: classic sudoku, sudoku free, brain sudoku puzzles, the daily sudoku online, sudoku challenge, sudoku tips, sudoku mega and more. Hush the nagging thoughts and learn how to play sudoku now!

🔥 Popular daily sudoku puzzles free on Android.
🔥 Download Happy Sudoku NOW to make math come easily to you!

Features:
✔️ 5,000+ online sudoku puzzles
✔️ Sudoku Daily Challenge: complete your daily sudoku challenges! Trophies and rewards are saying hi!
✔️ 5 difficulty levels: easy Sudoku, medium Sudoku, hard Sudoku, expert Sudoku and evil Sudoku! Whether you’re sudoku beginners or skilled sudoku players, pick your level from sudoku easy, sudoku medium, sudoku hard and sudoku evil and play free online sudoku and sudoku free to be sudoku experts!
✔️ Unlimited undos: Life doesn’t have a “withdraw” button. Sudoku puzzles and crosswords do. Ease your nerves! You can bring it back quickly!
✔️ Pencil mode and Notes: It will certainly help you deduce the right answer and learn how to solve sudoku more effectively. Turn the mode on or off as you wish. Moreover, in case you still miss the feeling of taking notes on paper, Happy sudoku has specifically designed the feature of Notes for you! Each time you fill in a cell and complete a row or a column, notes will be automatically erased.
✔️ Dark Mode: Sharpening your brain is vital. So too it is to protect your eyes.
✔️ Auto-Check: Numbers maniac, puzzle fiend or even Sudoku junkie wouldn’t know they’ve made mistakes. Just turn the mode on and Happy Sudoku will point you where and show you how to do sudoku.
✔️ Auto-Save: Auto save your previous sudoku puzzles to help you play sudoku online easily.
✔️ Smart and Intelligent Hints: Solving a hard sudoku puzzle can be distressing, but not with sudoku tricks and sudoku solutions.
✔️ Highlight Duplicates: Avoid repeating numbers in a row, column and block.
✔️ Statistics: Show you what you’ve accomplished, track your progress and you’ll get to know sudoku rules and sudoku techniques, sudoku answers and more. Complete your daily sudoku challenge to drill your self-confidence and self-reliance with thousands of free sudoku puzzles, sudoku free, sudoku strategy, sudokus, extreme sudoku, jigsaw sudoku and more.

What is sudoku? It’s actually number placement puzzle appearing in newspapers, such as usa today sudoku, la times sudoku, washington post sudoku, usa sudoku, etc. It is made up of a nine-by-nine grid (sudoku 9x9), and is to fill the layout with the digits from 1 through 9, within which every row, every column, and every three-by-three box contains these blank sudoku digits without repeating.

Happy Sudoku, a sudoku kingdom, picks up 5,000+ various types of sudoku puzzles with sudoku answers, including sudoku printable, sudoku 247, kakuro, killer sudoku online, sudoku free, sudoku x wing, sudoku classic and more. Easily choose your level from easy sudoku puzzles, sudoku online easy, free easy sudoku, easy sudoku for kids, sudoku for beginners, sudoku puzzles medium, web sudoku hard and sudoku online hard to be real sudoku puzzle solver.

If you’d like to take a quick break, practice organization and structure, strengthen your memory, make decisions quickly and feel more accomplished, Happy Sudoku is your go-to. Download the sudoku app now!

New features

- Optimized user experience.

App Permissions

Allows access to the vibrator.
Allows applications to open network sockets.
Allows an application to write to external storage.
Allows applications to access information about networks.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows an application to read from external storage.