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Open Sudoku is an Open Source Sudoku game.
Features:
• Without ads
• Puzzles can be downloaded from web, entered by hand or generated on the project's homepage
• Game stats (time spent, mistakes)
• Next step hints with multiple strategies suggestions
• Import to and export from a file
• Visual themes including custom theme editor
• Several input modes (finger-friendly numpad, popup, keyboard etc.)
• Double pencil marks
…and much more.
More information (including how to report ideas and issues) can be found on the project's home page: http://opensudoku.moire.org
What's New in the Latest Version 4.4.8
Last updated on Jun 25, 2025
• New "Hint" strategies: Remote Pair, B.U.G. (Bi-value Universal Grave), Unique Rectangle types 1..5
• New "Play random unsolved puzzle" button if there's no resume
• New SUID (Sudoku Unique ID) to identify any valid puzzle. You can copy it to clipboard (long-press puzzle to copy from list) and paste (within a folder or in the built-in puzzle editor)
• Bugfixes and improvements
• UI updates
• Translations updates
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Open Sudoku
4.4.8 by Moire
Jun 27, 2025