The goal of this Tetris puzzle is to clear all positions in the top three rows of the grid. Specifically, the positions f0-0f, f0-1f, f0-2f, f0-3f in row 0, positions f1-0f, f1-1f, f1-2f, f1-3f in row 1, and positions f2-0f, f2-1f, f2-2f, f2-3f in row 2 must all be empty. This means that no Tetris pieces should occupy any of these positions, and all pieces must be moved to lower rows to achieve this goal.