Fill the Number Grid and Challenge Your Brain in Sudoku
Sudoku is a number puzzle game where you need to fill empty squares using logic and careful thinking. The game features a grid filled with some starting numbers, and your job is to find the missing ones.
In a standard Sudoku puzzle, you work with numbers from 1 to 9.
Every row, column, and smaller 3×3 box must contain each number exactly once.
Sudoku offers several difficulty settings, daily puzzles, and helpful tools that make it suitable for beginners and experienced players.
Learn the Basic Rules of Sudoku
A standard Sudoku board contains 81 squares arranged in a 9×9 grid.
Some squares already have numbers. You need to use these clues to fill the remaining spaces.
Before placing a number, check its row and column.
You also need to examine the smaller box containing that square.
For example, you cannot place another 5 in a row that already contains 5.
The same rule applies to columns and 3×3 boxes.
Choose From Six Difficulty Levels
Sudoku includes Fast, Easy, Medium, Hard, Expert, and Master difficulty settings.
Fast offers shorter puzzles for quick practice.
Easy helps beginners understand number placement.
Medium introduces puzzles that need more careful checking.
Hard and Expert require greater attention to the available numbers.
Master provides a tougher challenge for players who enjoy difficult logic puzzles.
You can start with an easier setting and move to harder ones as your skills improve.
Try the Giant 16×16 Sudoku Puzzle
Sudoku also includes a special Giant Mode.
This mode expands the board to 16×16 squares.
You need to arrange the available values without repeating them in a row, column, or designated block.
The larger board gives you more squares to examine and more possibilities to consider.
A zoom feature helps you inspect different parts of the puzzle.
Complete Daily Sudoku Challenges
Daily Challenges give you another reason to play.
You can open the daily puzzle section and complete a new challenge.
The game also includes awards and statistics that help you review your progress.
Use Notes, Hints, and Other Helpful Tools
Sudoku includes Notes for recording possible numbers in empty cells.
Undo reverses a previous move, while Erase removes an editable number.
You can also use Hint when you need help finding the next answer.
Fast Mode lets you select a number and enter it into multiple squares without selecting it again.
How to Play Sudoku
Select an empty square and enter the number you want.
Check the row, column, and smaller box before confirming your choice.
Use Notes when more than one number seems possible.
Sudoku rewards careful thinking rather than guessing. Keep checking the available spaces until every square contains the correct value.