Ultimate Sudoku

Are you ready for a great struggle against the CPU in three different difficulty modes? You can start with the beginner level and after you improve yourself you can proceed to the next difficulty level. There are three basic rules of Sudoku; first; on each row, you should use every number for once, second; on each column, you should use every number for once and third; on each square, you should use all numbers for once. After you fill all of the empty areas correctly, the game finishes. You can play the game by "MOUSE" and "LEFT-CLICK".