Sudoku Generator & Solver
Generate unlimited Sudoku puzzles, play online, and improve your logic skills. Choose from 5 difficulty levels and use hints if you get stuck.
Select Difficulty
How to Play Sudoku
Sudoku is a logic-based number placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids (called "boxes") contain all of the digits from 1 to 9.
Basic Rules
- Each row must contain the numbers 1-9 without repetition
- Each column must contain the numbers 1-9 without repetition
- Each 3×3 box must contain the numbers 1-9 without repetition
- The puzzle begins with some cells already filled in as clues
Tips for Solving
Scan the Grid
Start by looking for rows, columns, or boxes that are almost complete. Look for missing numbers that can only fit in one cell.
Use Pencil Marks
Use the notes feature to mark possible numbers in cells. This helps visualize options and eliminate possibilities.
Look for Patterns
Advanced techniques like "naked pairs" or "hidden singles" can help solve more difficult puzzles.
Take Breaks
If you're stuck, step away for a few minutes. Often, the solution becomes clear when you return with fresh eyes.
Benefits of Playing Sudoku
Improves Memory
Remembering numbers and their possible positions strengthens your memory and recall abilities.
Enhances Logic
Sudoku requires logical thinking and problem-solving skills, which translate to better decision-making.
Reduces Stress
Focusing on a puzzle can be meditative and help take your mind off daily stressors.
Increases Concentration
Solving Sudoku puzzles requires sustained attention, improving your ability to focus.
Develops Pattern Recognition
Regular play helps you recognize patterns more quickly in puzzles and in real life.
Provides Satisfaction
Completing a challenging puzzle gives a sense of accomplishment and boosts mood.
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