🔢
Sudoku
Play the classic Sudoku puzzle online for free! Choose Easy, Medium, or Hard. Timer, hints, and auto-validation included.
Game
Sudoku
Play free Sudoku online. Classic 9×9 puzzle with timer, hints, and auto-validation.
🔢 Sudoku
Fill every row, column, and 3×3 box with the digits 1–9
0:00Timer
0%Complete
3Hints left
Puzzle
How to Play
👆
Click a cell to select it, then tap a number (1–9) or press keyboard keys
⌨️
Arrow keys navigate the grid. Delete erases a number
↩
Undo your last move, or press Ctrl+Z
✓
Use Check to highlight mistakes in red without penalty
💡
Use up to 3 hints per game to reveal a correct number
🔄
Reset restarts the same puzzle; New Game generates a fresh one
Rules
Fill the 9×9 grid so every row, column, and 3×3 box contains the digits 1–9 exactly once. Every puzzle has a unique solution.
Difficulty levels
- Easy — ~38 givens, solvable with basic elimination
- Medium — ~30 givens, requires some logic chains
- Hard — ~24 givens, needs advanced techniques