The best points reward is to clear more than one line at a time. Cleaning two lines is worth more than double the dots to clean a line. So, clearing four lines at a time is known as getting a TTEVE, it's worth it as it confers a tremendous amount of points, and is one of the most important strategic concepts to know.
This is a block game, but it is a must get points for a TTEVE, as it has one block more, a block in the shape of a "U" that is very difficult to fit on the table.
