Sudoku Generator
Generate a random Sudoku puzzle at your chosen difficulty level. You can solve it directly in the grid below.
Clues: 0
Errors: 0
Clue
Your entry
Solved
About the Sudoku Generator
Our Sudoku generator creates a unique, fully solvable puzzle every time you click Generate Puzzle. Choose your difficulty level to control how many clues are provided — fewer clues means a harder puzzle.
After generating, you can solve the puzzle yourself directly in the grid, use our solver to check your work, or print it for offline play.
Easy
Easy puzzles have ~35 removed cells and are suitable for beginners.
Medium
Medium puzzles have ~45 removed cells with more deduction required.
Hard
Hard puzzles have ~52 removed cells and require advanced techniques.
How to Use the Sudoku Generator
1 Getting Started
- ✓ Select a difficulty — Easy, Medium, Hard, or Expert.
- ✓ Click Generate to instantly create a unique, fully solvable puzzle.
- ✓ Solve it yourself by clicking cells and typing numbers.
- ✓ Use Validate to check for errors, or Solve Instant to reveal the full solution.
2 Difficulty Guide
- 💡 Easy (~35 removed cells): Most cells are solvable by scanning rows and columns — ideal for beginners building core skills.
- 💡 Medium (~45 removed cells): Requires elimination across rows, columns, and 3×3 boxes. A solid workout for regular players.
- 💡 Hard / Expert (~52–58 removed cells): Advanced techniques such as naked pairs and hidden singles are needed. May require trial and error.
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Tip: Hit Print to open a printer-friendly page — perfect for offline play, classroom handouts, or giving a custom puzzle to a friend.