Did Obito let Kakashi win?


So, during Obito and Kakashi's fight in the Kamui dimension, Obito gets a hole
in his chest. After watching the episode, most of the viewers commented that
Obito "was defeated" even though he had the Rinnegan. But wasn't it because
Obito **_"let"_** Kakashi win to undo Madara's Seal (as we see in **chapter
675** , Obito gets to know about the seal and wishes to undo it) and become
the Ten Tails Jinchuuriki? Also, I wanted to know that would Kakashi (a
**_non-Uchiha and a non-Senju_** ) have been able to **actually** defeat
Obito? Because during their fight, Obito didn't use _Izanagi_ or even one
_Rinnegan_ ability (even though, just moments later, he seals the Ten Tails
inside him with the Rinnegan). I am compelled to say this, but Obito's
abilities are no joke.

Please provide a convincing answer to explain exactly what happened during the
fight and what would've happened if Obito was really serious.




Yes he did. Though It was not completely intentional. Specifically, he need a
hole through his heart, because Madara placed a Seal on his heart, which he
planned on using to control him. Obito later noted that He could not become
the 10 tailed Jinchuriki because of that Seal. So Obito forced Kakashi use his
Raikiri to pierce his Heart, destroying the seal. However, it was not a
simple, let him do it kind of deal.

The Wiki unfortunately leaves out most of these details, but the Curse Mark's
Entry on the Wiki has some of them, Its called The [Forbidden Individual
Cursed Tag](http://naruto.wikia.com/wiki/Forbidden_Individual_Curse_Tag). It
forced Obito to not betray Madara, so in that respect, Obito could not just
let it happen. However, he could indirectly let it happen, by forcing it, and
otherwise weakening himself so that he could not stop it. In the Kamui
Dimention, He could not use his intangibility, which would have been his main
and possibly only solid defense against Raikiri. He also restricted his Chakra
useage, saving it for the future battles in the war, rather then using it to
win against kakashi, as he used almost no ninjutsu, and almost no Rinnegan
techniques.

