Pure Sudoku: Classic

Pure Sudoku is a clean and straightforward take on the classic number puzzle. Start a new board anytime and enjoy solving at your own pace with an easy-to-read layout. Choose from Easy, Normal, Hard, and Expert. Every generated puzzle has a unique solution, giving you a fair and satisfying challenge each time. Features • Four difficulty levels • Notes for candidate numbers • Undo and erase controls • One hint per game • Timer, pause, and mistake tracking • Local game records and best times • Replay previously played boards • Light and dark appearance • Korean, English, and Japanese support Whether you are learning the basics or testing advanced techniques, Pure Sudoku keeps the board clear and the controls simple.