Sudoku
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About This Game
Sudoku is the classic number placement puzzle. Fill a 9x9 grid so each row, column, and 3x3 box contains digits 1 through 9 exactly once. The game features thousands of puzzles across four difficulty levels (easy, medium, hard, expert). Includes pencil marks for notes, hint system, auto-check for mistakes, and timer. Clean interface, daily challenges. Sudoku is the classic number-placement puzzle. Fill the 9x9 grid so every row, column and 3x3 box contains the digits 1 to 9 exactly once. Sudoku is a brilliant way to train your logic and concentration, with puzzles suited to everyone from beginners to experts. Each puzzle has a single solution, and finding it step by step is deeply satisfying. Best of all, Sudoku is completely free to play and runs instantly in your browser — no downloads, no sign-up, no installs. It works smoothly on both desktop and mobile, so you can jump in and play anywhere, anytime, whether you have two minutes or two hours. Use your mouse or keyboard on desktop, and tap or swipe on touch screens. The controls are simple to learn, so you can focus on having fun from the very first second.
How to Play
- In Sudoku, tap or click a cell to select it, then pick a number to fill it (or type it on your keyboard).
- Use the note feature to pencil in possible numbers for tricky cells.
- Remember the one rule: no repeats in any row, column or box.
- Fill in the easy cells first, then use elimination to narrow down the rest, and use the hint button if you get stuck.
