Guess the rules

Same this bot has rule and exception can you find them :-).

Camille is white on this game, Stockfish is black 2500 elo both.
Here the exception are to make the game more balanced and try to emulate/create a distinctive play style. Knowing the rule you can take advantage of the bot, but it would not be massive, but like goliath this would be a very good training exercise.

The elo difference between Camille at 2500 elo and this bot is around 200 elo. More importantly there is not to my knowledge anyway to "cheese" the bot like with goliath.
That's was the primary function of Camille , create bot who are nice to play and have a personality.

Camille as black lose , both engine are at 2500 elo

Nobody wants to try? It is pretty obvious a quite a good training bot, or just a bot with "personality "

Nobody found :-)

This bot cannot go on the four central square except for taking. Perfect bot to let the student take the initiative in controlling the center.
You can forbid the bot to go on one square totally and that's not an issue against SF because SF don't analysis the opponent and thus cannot take advantage of any limitation/rule. But a human would just put a queen/rook/bishop on the square knowing that they are perfectly safe.

It has to be a chess game with legal moves

All the move are legal, the bot will just not consider some move. In this case the bot will not go to the four central square except for taking or if that's the only legal move possible.