blackshoe, on 2015-August-03, 08:43, said:
I wondered about that, but I could not find anywhere in the Laws that empowered an RA to ban a psychic control. The word "control" only appears under "control of board and cards" and "control of spectators", clearly irrelevant, but it might be there with a different wording. I wondered if an RA could specify that a double to say "don't lead my suit" was a special partnership understanding which they could regulate without limit, but that goes against the specific wording of 40B2, and also:
40B1a <snip> "A special partnership understanding is one whose meaning, in the opinion of the Regulating Authority, may not be readily understood and anticipated by a significant number of players in the tournament."
So, if a "Watson or McCabe" double is alerted and explained as "don't lead my suit; I psyched," then it would be readily understood by all the players in the tournament, so is not a special partnership understanding.