Sudoku
PuzzleSudoku is the classic number puzzle. Fill the 9×9 grid so that every row, every column, and every 3×3 box contains the digits 1 through 9 exactly once. Choose from Easy, Medium, or Hard, and click a cell to enter a number.
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Click a cell, then tap a number (or type 1–9). Use ⌫ to erase.
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How to play Sudoku
- Each row, column, and 3×3 box must contain the numbers 1 to 9 exactly once.
- Click an empty cell to select it, then enter a number.
- Numbers that break the rules are shown in red.
- Fill every cell correctly to win the puzzle.