Focused board
Large numbers, clear boxes, and calm colors keep attention on the puzzle.
Free online Sudoku
Play Free Sudoku
Free online Sudoku with clear controls, four difficulty levels, and no distractions. Built for quick daily play and quiet concentration.
Four difficulties
Start with easy Sudoku or move into hard and expert puzzles when you want a tougher grid.
No account required
Open the page, choose a puzzle, use notes or hints, and keep playing.
How it works
Simple controls for a classic puzzle.
Pick a difficulty
Choose easy, medium, hard, or expert from the row above the board.
Fill the grid
Use the number pad or keyboard. Turn on Notes when you want candidate marks.
Check or finish
Use Check to catch mistakes, Hint when stuck, and New Game for a fresh board.
Keep playing
Start a puzzle now, then switch difficulty anytime.
Use Notes for candidates, Check when something feels off, Hint when you are stuck, and New Game when you want a fresh board.