Free Online Sudoku

Fill the 9x9 grid so every row, column and 3x3 box holds the digits 1 to 9 exactly once. Every puzzle has exactly one solution, and is graded by the techniques it takes to solve.

How to play Sudoku

Pick a cell and tap a digit. Use pencil marks to note the candidates for a cell. The same digit, row, column and box light up as you play. Three mistakes and the puzzle is lost, so think before you place. Stuck? Take a hint, or undo your last entry.

Features

• Easy, Medium, Hard and Expert puzzles, each with a unique solution
• Pencil marks, number pad, erase, undo and hints
• Highlights for the same digit, row, column and box
• A shared daily Sudoku with streaks

Try our other games: Minesweeper · Solitaire · Heist Multiplayer