Our Sudoku puzzle will bring you unique gaming experience! Easier levels help you exercise your brain, logical reasoning and memory; harder levels bring you a powerful real mind workout. Train your brain with Sudoku anywhere, anytime, enjoy the pleasant of number blast! Game mode: Four grid: Fill a 4x4 grid with digits so that each column, each row contains all of the digits from 1-4. Sudoku beginners can learn a lot from this mode. Six grid: Fill a 6x6 grid with digits so that each column, each row contains all of the digits from 1-6. Standard: Fill a 9x9 grid with digits so that each column, each row contains all of the digits from 1 to 9. This mode will greatly exercise your logic and mind. Hope you enjoy Our Sudoku game！ Dear puzzle lovers,we are glad to introduce a new update! In this version we've made some subtle changes for the app to run more smoothly. If you have any issues or questions, feel free to contact us through the feedback portal on the app homepage. We will be happy to help!