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Sudoku
Free online Sudoku with four difficulty levels, notes mode, hints, and best-time tracking — plays instantly in your browser.
Free online Sudoku with four difficulty levels, notes mode, hints, and best-time tracking — plays instantly in your browser.
Sudoku is a logic-based number puzzle. The goal is to fill every row, column, and 3x3 box with the digits 1 through 9, with no repeats. Start with the given numbers and use elimination to figure out what goes where. Our free online version offers four difficulty levels from easy to expert, so whether you are a beginner learning the basics or an experienced player looking for a challenge, there is a puzzle for you.
This Sudoku game includes notes mode for pencil marks, up to three hints per game, undo support, and automatic error highlighting. Your statistics and best times are saved locally so you can track your progress across sessions. Full keyboard support and a responsive landscape layout make it comfortable to play on any device. No downloads or accounts required.