Our free online Sudoku puzzles are popular number-placement games that are fun for the whole family.
The objective of Sudoku online is to fill up a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid contains all of the digits from 1 to 9.
Upon beginning, the Sudoku puzzles will contain a partially completed grid, which typically has a unique solution.
To play Sudoku, simply type your entries in the squares. Or, click a square, hold the mouse button down and drag up or down to select a number. As you fill in the squares of the Sudoku puzzle correctly, options for the remaining squares are narrowed and it becomes easier to fill them in.
You also have access to our printable Sudoku puzzles, to take the fun with you wherever you go.
Start flexing your mathematical muscles and play our free Sudoku puzzles today!