Ultimate Sudoku is a free-to-play puzzle game. Train your brain with Ultimate Sudoku! Your goal in this challenging logic puzzle is to fill a grid with numbers so that each row, column, and section contains all the digits between 1 and 9. Ultimate Sudoku can be played in windowed mode or full screen mode (press FULLSCREEN button). Play in easy, medium or hard mode, and use hints and other tools if you get stuck. Can you solve this fun math game and fill out the entire grid? Play Ultimate Sudoku online, both on a mobile device (iOS/Android), and a desktop computer (PC/Mac).
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