Sudoku classic

Sudoku classic

com.quarzo.sudoku by Quarzo Apps
4.2 (7,416)
1M+
GAME_BOARD
13.9 MB
Updated Jun 25, 2025
View on Google Play

Screenshots

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About this app

A classic game!
To solve the game you must complete the puzzle by filling in all the numbers (from 1 to 9) so that each digit does not repeat in the same row, column or block.
This app will become your favorite Sudoku game.

WAIT!, THERE'S MORE!
Includes cool color themes, with a night mode theme.
You are able to change the letter font.
Win trophies by solving each daily sudokus.
Customize the game UI depending on your expertise

【 HIGHLIGHTS 】
✔ Minimalist, simple and fun game.
✔ 7 difficulty levels
✔ Many customizable aids
✔ Full game is free, with very few ads (no ads while playing)
✔ Exercise your brain and relax solving suokus!
✔ Beautiful and simple user interface (portrait and landscape)
✔ Compatible with all devices including tablets
✔ Includes sounds (can be disabled) and images in HD
✔ Infinite Sudoku generator
✔ No intrusive permissions

【 CUSTOMIZATION 】
You can customize some features of the game (from the settings option):
* Play or mute the sounds.
* Language.
* Animations
* Device orientation.
* Full screen or not

【 DIFFICULTY LEVELS 】
◉ 1 - Very easy : Suited for people learning how to solve Sudoku.
◉ 2 - Easy : Recent studies show that playing Sudoku helps elderly people memory. Just do it!
◉ 3 - Intermediate : You will be able to finish Intermediate level games using basic techniques: Hidden singles and Naked singles.
◉ 4 - Hard : This puzzles need to use some intermediate techniques: Pointing pairs, Naked pairs, etc.
◉ 5 - Expert : This are intended for advanced players that can combine many intermediate strategies.
◉ 6 - Extreme : To solve this grade puzzles you'll need to use some advanced strategies: X-Wing, Y-Wing, Swordfish, etc.
◉ 7 - Nightmare : Only pro players will be able to finish this games. This is a real challenge. Maybe you'll need some luck to solve it :)
All Sudoku have only ONE possible solution.
◉ 8 - Grandmaster: This are considered the hardest sudoku to complete. Will you be able to succeed?

All sudokus have only ONE possible solution.
Just one more thing...
ENJOY !!!

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Any suggestion or bug report is welcome. Please, before writing a bad review contact us by email at [email protected]

What's New

♥ Thank you for your support and comments! +1 000 000 Downloads !!!
🔥 8 Difficulty Levels!
📜 Sudokus history.
✏ Editor!
🏆 Solve the daily Sudoku and win trophies.
🧠 Train your logical brain.
🤖 Infinite puzzle generator.
🛠 Full customizable app

Any suggestion or bug report is welcome.
Please, before writing a bad review contact us by email at [email protected]

App Information

Version Name
1.2.6
Version Code
126
File Size
13.9 MB
Minimum OS
Android 6.0+
Target SDK
Android 34
Developer
Quarzo Apps
Contact
Website
Content Rating
Everyone
Package Name
com.quarzo.sudoku

Permissions Required

This app may request the following permissions:

  • view Wi-Fi connections
  • view network connections
  • full network access
  • control vibration
  • prevent device from sleeping
  • Google Play license check

Recent Reviews

Tyler Giusti
1.0★
I've been playing one "Nightmare" mode game for multiple years. I've restarted the same game multiple times. I'm very well versed at various forms of Sudoku. I am confident in saying at this point that the puzzle this app generated is impossible. Not just very difficult. No, it's literally not possible to solve. Don't use this app if you want puzzles that can be solved.
Gabriel Taets
5.0★
The most satisfying option right now. The coloring options are great and the various difficulty levels are adequately challenging. Ads are not intrusive and the "premium" option is very reasonably priced. The only feature missing that almost all other apps have is highlighting candidates when selecting a number.
Ashley Colina
5.0★
This is the best Sudoku game I've played so far. I haven't encountered any issues, and it's really nice to have so many settings for players like me who want to customize things like number color or font weight. This is a very good and engaging app—thank you, devs!
Giz Bowe
2.0★
I previewed numerous Sudoku games, and liked this the best. After 150+ games, I'm not disappointed. I went ad-free, though the ads weren't obtrusive - worth it. I do wish it had a teaching component for advanced strategies such as X-wing or Swordfish. Taking off 3 stars as there are far, far too many repeat games, even though it touts an infinite puzzle generator.
A Google user
5.0★
It just works. The only time I got mad at it was when I hit the hint button on accident, but there's a menu option to turn them off. I suspect that one of the puzzles on the diabolical difficulty is actually impossible, but either it is impossible and the developer put it in there to mess with us, or it is possible and I'll have to get better to figure it out. Either way I like it.
Toby Joseph
5.0★
This game is worth more than 5 star review. I'll recommend it always. But the only feature I wish could be added is background music to help with smooth solving of the puzzles without working your brain up too much.
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