Sudoku online
Choose 4 × 4, 6 × 6 or 9 × 9. The 9 × 9 grid offers easy or medium; smaller grids use their own setting.
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Game controls
Choose 4 × 4, 6 × 6 or 9 × 9. The 9 × 9 grid offers easy or medium; smaller grids use their own setting. Tap an empty cell or enter it with the keyboard and type an allowed digit.
Review and continue
Check reviews your entries while leaving empty cells to solve. One hint fills a cell; Reset clears your entries in the current puzzle. Check rows, columns and boxes before asking for help.