Sudoku Classic Number Puzzle

Sudoku is a classic and challenge puzzle game, and quite a TIME KILLER. We graded it’s difficulty to 4 levels - easy, medium, hard and expert, made sure it suits for beginner and high-level player. You’ll never feel any bored moment as long as you try it once. Endless levels wait you to solve, if you are a big fan of sudoku puzzle games, you can’t miss this one! Download it now, enjoy and have fun!! 
 
Features 
- Auto-Check:  help you see your mistakes. 
- Notes: marks numbers as on paper.  Automatically update and check when you fill in a cell.
- Hint: it will be helpful when you are stuck.
- Region Higlight: make selected cell stand out in block, column, row.
- Visual Cue: color all same numbers in other blocks when you selected one.
 
Highlights
• 9x9 grid puzzle.
• More than 10000 classic well-formed sudoku puzzles. Endless levels waiting for you to solve! 
• Suitable for all ages! 
• Training your brain and logical thinking.
• All free. Play offline anytime, anywhere. 

More Functions 
- Note: Use it to make marks. 
- Undo: Go back to the steps you did. 
- Erase: Clear numbers in a grid. 
- Hint: Use it to fill in a blank cell.