Board Thread:Naruto Discussions/@comment-27829630-20151231135502/@comment-26369387-20151231141228

First, this kind of question belongs to here, not Discussion Board.

Second, it was explained pretty clearly in chapter 594 that just portion of Tailed Beast's chakra is enough to resurrect Ten-Tails, even if not perfectly. Obito had one of Gyūki's tentacles and sealed Gold and Silver Brothers, who were pseudo-jinchūriki with Kurama's chakra.