Fill all of empty squares in the grid with a number. Each number may appear only once in each row, column, and 3x3 box. Each puzzle has only one solution. If you try to place a picture where it already exists on that row, column, or small square, all occurrences will flash. Set the difficulty to easy, medium, hard or expert level depending on your Sudoku puzzle skills. Play Sudoku online on your mobile phone, tablet or computer.
To place a tile on the board, use the mouse to click and drag or touch and drag a square from the bottom of the screen.
This free online game was built with HTML5. It runs on Chrome, Firefox, Opera, Safari or Internet Explorer 9 or higher. Play Sudoku unblocked on any device. Sudoku online is optimized for use on PC, Android and iOS devices, including tablets and mobile phones. This game runs directly in your browser - no downloads, no registration, no flash and no plugins are needed to play.