Posts from Clarification of the CIS rules for 2010-11. Auto-translated

Unfortunately, pairs of players will be in practically different rooms, with a wall between them. It would be better if the players were facing each other, like in "Legion," as you saw.
But we need to accommodate many players; in "Legion," only half could fit. It's only suitable for an internet center with 34 computers and a few more connections for laptops.

This is very bad; there will be hints, spying, and so on.

very bad, there will be hints, spying, and so on.

If a person wants to give a hint, they will give one, and there's nothing you can do about it... at least reduce them to an acceptable level. Though for a tense final battle, a referee would be fitting.

And about spying — how much of a vile rat do you have to be to watch and go snitch? In principle, the gaming zone is divided into two. People from St. Petersburg and Moscow are in one zone, with guests also registering there. They won't have to suffer from boredom — there will be 14 games before their eyes.
"The rest of the world" sits in another zone. If that makes the players feel calmer — then so be it.