Woo! Sudoku

Sudoku puzzle, as invented in Swiss in 18th century, is the most popular intellectual game in recent years. It's the ultimate quest of human beings: Self-Challenge!
Woo! Sudoku provides infinite, auto-generated game boards for you, from level "Novice" to "Hell".
Being carefully designed, Woo! Sudoku put all buttons and keys just next to your finger, extremely handy for playing on big screen phones and mobile devices.
Yet, this game is extremely small in size and requests very little power, very good for long time play.

After all this, IT'S TOTALLY FREE!

Features:
- 5 difficulty levels, from Novice to Hell.
- 5 language support
- Statistics for game play
- Pencil mode, for temporary mark numbers.
- Highlight same numbers in the board
- Highlight related cells (same row, same column, same square) in the board
- Highlight miss placed numbers, marks
- Clear marks after number entering
- Input key pad moves next to selected cells.