Play Sudoku Online Free
Fill a fresh 9x9 Sudoku grid in your browser with a puzzle that has exactly one solution. Choose Easy, Medium, Hard, or Expert, use notes for candidates, and resume your saved puzzle later.
Game features
- Unique-solution puzzle generation for every new game
- Easy, Medium, Hard, and Expert difficulty levels
- Notes mode, elapsed time, automatic save, and completion detection
- Responsive keyboard, mouse, and touch controls
How to play
Aim: fill every row, column, and 3x3 box with the numbers 1 through 9.
Select a cell, then enter a number from the keyboard or keypad. Given cells are locked and cannot be changed.
Turn on Notes to record candidate numbers. The game is solved only when every cell is filled with the correct value.