Sudoku
Choose a difficulty to start Sudoku.
Pick your difficulty
Sign in to track your progress
Sudoku is the classic 9×9 number puzzle where every row, column, and 3×3 box must contain the digits 1 through 9 with no repeats. Tap a number, pick an empty cell, and work your way through the grid using logic and deduction. You can also drag the number into the cell. It's one of the world's most popular brain games for good reason.
Tailored for seniors, this version of Sudoku offers large numbers, clear grid lines, and simple tap-to-place controls. Easy puzzles start with more numbers filled in, while Hard puzzles leave you with fewer clues.
Play a quick puzzle for a short mental boost or settle in for a deeper challenge. Regular Sudoku practice can strengthen logic, patience, and attention while staying fun and rewarding.
Try More Brain Games
Related Printables & Resources
Sudoku Questions
Is this Sudoku free?
Yes. It is completely free to play online — no payment, no ads, and no account required.
Do I need to create an account?
No. You can play straight away in your web browser without creating an account or signing in.
Is there an easier version than the usual 9x9 grid?
Yes. Easy uses a 4x4 grid and Medium a 6x6 grid, which are much gentler than a standard puzzle. Hard uses the full 9x9 grid.
Is the print large enough for older eyes?
Yes. The grid and numerals are rendered large with strong contrast, and the puzzle scales to fill the screen on phones, tablets and desktop.
Is it suitable for beginners?
Yes. The 4x4 grid is a good place to learn the rules before moving up.