6 Degrees of Separation

[The Saucepan Man]

But still, why 3? why not 4 or 5 or 6?

Because it could be done in three.

It is optional to set a maximum number of links. But, if the question-setter sets a maximum then it must be done in that number. Otherwise it can be done in up to 6 degrees (hence the name of the game).

But you used Sauron anyway, Perky.

How about:

Ghân-buri-Ghân -> Merry -> Glorfindel -> Ecthelion -> Gothmog.