[MrJohnston]

Watching the rules, discussions, Q&A, etc., one thing has become clear: The referees are going to be busy! Just off the top of my head, they must:
* Confirm success each time a defense is crossed
* Watch for contact in the secret passages
* Keep track of the number of boulders in each castle at any given time
* Watch for potential fouls as robots approach their own defenses
* Keep track of the Spy's activities
* Make sure the human players don't leave assigned areas
* Watch for general illegal play in the courtyards

So, my question is: How many referees will it take to properly monitor this game?