Think faster than your opponents do! The aim of this free puzzle sudoku is to fill all the blank cells on the playing field with yellow numbers to get the highest score! Some of the cells are already filled. The more squares you fill in, the easier it is to figure out the number of the rest empty ones. If you fill in the cells correctly, options for the remaining ones are narrowed and it becomes easier to solve this online sudoku brainteaser. Be patient and attentive to win the daily sudoku championship;)! Train your brain and good luck!