Were there 7 Horcruxes -- not 6 as Dumbledore intimated to Harry? If so, does this mean that Voldemort had an 8-part soul? When Harry was a baby, Voldemort tried to murder him which resulted in what would have killed him if he didn't have Horcruxes. Wouldn't this mean that he would have had to use one of his Horcruxes to stay alive?