Open Sudoku APK

Open Sudoku – Detailed Overview

Introduction

• Open Sudoku is a free and open-source Sudoku puzzle game designed for users who appreciate a clean, distraction-free gaming experience.

• Whether you’re a beginner or an experienced player, it offers flexibility, customization, and a variety of play options that make solving puzzles both enjoyable and challenging.

• Developed with simplicity and community contribution in mind, Open Sudoku combines functionality with thoughtful design.

Key Features

1. Ad-Free Experience

• The game offers an uninterrupted Sudoku experience without advertisements.

• Ensures complete focus on gameplay and puzzle-solving.

• Perfect for users who value open-source solutions without commercial distractions.

2. Puzzle Availability and Creation

• Puzzles can be downloaded directly from the web for continual variety.

• Users can manually input their own Sudoku puzzles for personal play.

• The project’s homepage provides tools to generate new puzzles automatically.

• Ideal for both casual play and practice with personalized challenges.

3. Game Statistics

• Tracks your playtime, number of mistakes, and completion rates.

• Enables players to monitor progress and improvement over time.

• Helpful for those keen on enhancing their solving strategies.

4. Hints and Strategy Support

• Includes a hint system that suggests the next logical move.

• Offers explanations and multiple strategies for better understanding of Sudoku techniques.

• Assists beginners in learning while still challenging experts.

5. File Import and Export

• Players can save puzzles to files or load them from external sources.

• Supports sharing puzzles between devices or users.

• Convenient for backup and collaborative play.

6. Visual Customization

• Provides several built-in visual themes for different preferences.

• Includes a custom theme editor for personalized color and layout adjustments.

• Enhances readability and comfort during extended play sessions.

7. Input Options and Pencil Marks

• Supports multiple input methods: on-screen numpad, pop-up entry, or keyboard input.

• Designed for both touchscreen and traditional devices.

• Features double pencil marks for marking multiple candidate numbers elegantly.

More Information

• For updates, community discussions, and guidance on reporting ideas or issues, visit the official project homepage: http://opensudoku.moire.org.

• Open Sudoku continues to evolve, driven by user feedback and open-source collaboration.

FAQ

Q: On which platforms can I play Open Sudoku?

A: Open Sudoku is primarily developed for Android devices, though versions or ports may exist for other platforms through community efforts. Because it’s open-source, developers can also adapt it for their own devices or operating systems.

Q: Do I need an internet connection to play Open Sudoku?

A: You can play Open Sudoku entirely offline once it’s installed. However, connecting to the internet allows you to download new puzzle sets or updates from the project’s homepage, ensuring you always have fresh challenges available.

Q: Is the game really free and ad-free?

A: Yes, Open Sudoku is completely free and does not include any advertisements. This ensures a focused gameplay experience, free from interruptions or commercial messages.

Version History

v4.5.5——22 Oct 2025

Open Sudoku is an Open Source Sudoku game. Download the latest version of Open Sudoku 4.4.10 to enjoy new features and updates immediately!

*4.5.5

• Puzzle difficulty rating function introduced [Rainer Popella]

• Themes functionality reimplemented [Bart Uliasz]

• Reworked pencil marks look and behaviour [Bart Uliasz]

• New "Hint" strategies (Simple Coloring Type 1 and Type 2) [Rainer Popella]

• Existing "Hint" strategies improvements [Rainer Popella]

• Hint usage added to puzzle stats [Bart Uliasz, Rainer Popella]

• Added option to choose filters when random puzzle button is clicked [Bart Uliasz]

• Visual keyboard improvements and fixes [Bart Uliasz]

• Lots of bugfixes and improvements [Bart Uliasz]

• New translation to Arabic! [E2EEAES256]

• Existing translations updates [Bart Uliasz, Claudio Strizzolo, Joonas Reinholm, Manuel Tassi, Rainer Popella, Yurt Page]

*4.5.4

• New SUID (Sudoku Unique ID) to identify any valid puzzle [Bart Uliasz]

• New "Hint" strategies (Remote Pair, Chute Remote Pair, BUG: Bi-value Universal Grave, Unique Rectangles) [Rainer Popella]

• New "Play random unsolved puzzle" button if there's no resume [ReisMiner]

• New title screen menu option to save Logs [Bart Uliasz]

• Unsolvable puzzle alert [Bart Uliasz]

• Numerous bugfixes and improvements [Bart Uliasz, ILikeYourHat]

• UI updates [Bart Uliasz]

• New translation to Romanian! [Dragos Miron]

• Translations updates [AndyRn.t.me, தமிழ்நேரம் - anishprabu.t, Bart Uliasz, Dream X, Ettore Atalan, Erik Dorner, Joonas Reinholm, Libor Rejč, Lula Bye, Maksim_220 Кабанов, Manuel Tassi, michte, Óscar García Amor, Rainer Popella, Yurt Page]

*4.5.3

• New "Hint" strategies implemented (WXYZ-Wing, Fish basic, Skyscraper, 2-string Kite, Turbot - Crane, Empty Rectangle, Remote Pair). [Rainer Popella]

• New Xmas Challenge (available only in December). [Bart Uliasz]

• Keyboard UI updated. [Bart Uliasz]

• Multiple bugfixes (landscape mode, puzzle editor, import/export, and many others). [Bart Uliasz, Rainer Popella]

• Speedup folder list with big sets of puzzles. [Bart Uliasz]

• UI and application responsiveness improvements. [Bart Uliasz]

• Updated "About" and "What's new" dialogs. [Bart Uliasz]

• New translation to Finnish! [Joonas Reinholm]

• New translation to Tamil! [தமிழ்நேரம் - anishprabu.t]

• Existing translations updates. [Bart Uliasz, Ettore Atalan, Jens Persson, Óscar García Amor, Rainer Popella]