shift[/B]. This activates Combat Challenge (ref above). Since Combat Challenge is an immediate interrupt (also above) it is limited to only once per round, as per the rules, so he would get to smack only
one creature, even if they all shifted.
Now if the kobolds had all
moved, this would draw an Opportunity Attack, which is once per Combatant's turn. So as each kobold
moves, it would be hit by an Opportunity Attack, which activates
Combat Superiority./quote]
Emphasis mine. You missed that inanti is describing two scenarios, one in which all the marked kobolds shift, and one in which they all
move instead.
Another reason why the 9 opportunity attacks doesn't work is because you get only 1 opportunity attack per TURN. The goblins aren't shifting on their individual turns, they're shifting on the FIGHTER's turn. So if a fighter makes an attack and for some odd reason forces multiple enemies to open themselves up to AoOs (which isn't possible, as outlined above) he could only choose one of which to make his OA on.
Note that inanti's example uses
kobolds, not goblins. Kobolds shift as a minor action
on their turn. Which is a moot point anyways because inanti is talking about
opportunity attacks, not Combat Challenge attacks, which are provoked by moving, not shifting, and even goblins can't
move on the fighter's turn. If a fighter is surrounded by 9 enemies and each enemy
moves away, then yes, the fighter gets 9 OAs, one per opponent.