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About Open Sudoku
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 4.10.0
Last updated on 2026-09-23
- New 'Validate pencil marks' feature to highlight clearly invalid marks
- Fix multiple landscape visibility issues (board and keypad)
- Improve edge-to-edge compliance and fix UI overlaps
- Improve theme selection UI and primary color preview in custom themes
- Fix App Not Responding issues during batch undo operations
- Performance optimizations
- Translations updates
- Fix multiple landscape visibility issues (board and keypad)
- Improve edge-to-edge compliance and fix UI overlaps
- Improve theme selection UI and primary color preview in custom themes
- Fix App Not Responding issues during batch undo operations
- Performance optimizations
- Translations updates
Gameplay and Screenshots
Old Versions of Open Sudoku
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