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.

- Add 'Validate pencil marks' feature to highlight invalid marks [Bart Uliasz]
- Fix landscape pop-up keypad visibility and button sizing [Bart Uliasz]
- Refactor SudokuBoardView measurement and update landscape layout [Bart Uliasz]
- Optimize BaseThemeColor and 'Modify Cell Coloring Colors' dialogs for landscape mode [Bart Uliasz]
- Improve theme selection UI and primary color preview in custom themes [Bart Uliasz]
- Performance optimizations: caching game stats, batch updates for commands, and