A) First, factor in the current level (speed) you are playing in. The "Heart Levels" do not affect this equation.

B) That magic number, 4.

C) Determine the Line Multiple (LM). How many lines you eliminate at once (one, two, three, or the prestigious four) comes into play here. As you will observe, a Tetris (four lines) is thirty times better than a single.

D) The final touch to the score is the drop factor. Here, "drop" reflects the contiguous distance (in terms of individual rows) between the point at which you first began pressing the down button to the point of contact with the ground, other blocks, etc. This number will range between 1 and 15, and is not affected by the current level (speed).