Instead of rapidly tapping B to attack with random combos, you can execute more powerful moves by pressing B in a well-timed pattern. Press B once, then again immediately afterwards, but not before the first strike lands. Your Jedi will perform a more powerful force move on the second strike. It will make a special sound when performed correctly, and little sparks from the Force will appear from your lightsaber. Most Jedi or Sith will perform another Force slash if you press B again after the first one finishes. Remember, you must press B at the correct moment after each move, but do not press it before the move ends or you will perform the normal combos. For easier execution in combat, just press B in a steady pattern, lining up one strike after the other.