Play Sudoku online with the unique dosudoku.com interactive play window Choose from a wide range of difficulty levels and puzzles Click on any cell or use the arrow keys to move around the grid Place small pencilmark digits as well as solution digits Use the solution assistants to help you solve the puzzle Unlimited undo and redo to aid experimentation Save your game at any point and continue later Online book browser with full puzzle views Detailed statistics and records Compare your performance with average times and ratings Rate each puzzle More details