Sudoku - Classic Board Game

Sudoku is a great fun for people of all ages. Exercise your brain where ever you go with Sudoku puzzle game with 4 levels of difficulties easy, tough, master and irregular. It's a perfect game for a break or when you're waiting for the bus. 

Features:
- 4 difficulty levels: Easy, Tough, Master, and Irregular.
- More than 400 well-formed Sudoku puzzles.
- Unlimited Undo.
- Auto Error Checking Option.
- Pencil & Erase.
- Simple and Intuitive Design.
- Highlight Duplicates.
- Leaderboard.

How to play:
1. Tap on cell with empty number and select appropriate solution from keyboard from 1-9 numbers
2. Easy row and column must be filled with 1-9 numbers without repeating same numbers within each row, column and current square.
3. When sudoku puzzle finish with all numbers solution without any error, puzzle solved.