Pasted from IMDB. This makes the scene even greater:
Count Rugen wounds Inigo five times before and during the period of the film: the two cheek scars he inflicted on Inigo when he was a child, sword thrusts to one forearm and the opposite shoulder, and the knife wound in the stomach. When Inigo finally gets the upper hand in their duel, he returns exactly those wounds and no more: first the forearm and shoulder, then the cheek slashes, and then finally he kills Rugen with a thrust to the stomach.