After his father is murdered in front of him, and Inigo escapes with scars on his face, he decides to train intensely for ten years in order to get revenge on his father's murderer. He spends these ten years travelling, training with different teachers, squeezing rocks, and conditioning his body. He does this all so that he can become the best fencer in the world and be able to defeat the six-fingered man in a duel. When he finally gets to duel the Count, he is thrown off guard when Count Rugen stabs him with a dagger. Inigo leans against the wall in defeat, but eventually musters up the determination to keep fighting. Ultimately, it was his love for his father and his desire for revenge that allowed him to keep fighting and eventually win the battle, but his many years of mental and physical training were also key factors. He describes his lessons in controlling the mind, and how those lessons helped him to defeat Count Rugen. It might not have been necessary for him to train for such a long time, but his teachers did teach him useful things which he used in his duel with Count Rugen. Overall, Inigo's training was definitely helpful in the end, but the intensity of his training might not have been entirely necessary. His training was important, but it was not the only factor in his defeat of Count Rugen.