Sudoku

This is the best free sudoku game (数独). It is very addictive sudoku puzzles.
Sudoku (also called Number Place) is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 sub-grids that compose the grid contains all of the digits from 1 to 9.

This is a simply easy-to-use sudoku game, with fresh and cool interface, very acceptable difficult levels, suitable for sudoku beginner to sudoku expert.
sudoku game features:
- There are 4 difficulty levels to play:
+ Easy level: for beginners who are pre-intermediate in sudoku.
+ Medium level: For those who have familiarly with. You can play medium level only when your score is bigger than 1 points.
+ Hard level: It needs more time to think and play. You can play hard level only when your score is bigger than 10 points.
+ Master level: That is the hardest level for those who are sudoku master. You can play master level only when your score is bigger than 30 points.
- Comfortable and easy in use
- Totally free & fun
- Automatic error checking option
- Show digit counts option
- You can check your times and improve them
- You can share to your friends via Google+, twitter and facebook
Become a sudoku master and You won’t be looking for a paper puzzle ever again!
Enjoy!