Cascade, on 2013-June-14, 14:16, said:
Even in the US under the GCC Drury is not allowed to be used as a psychic control. Here is the relevant wording:
Drury
Psychic Controls under "Disallowed"
The emphasis of "ANY" is theirs not mine.
I would rule against any pair who used Drury in conjunction with a psychic call.
If it is not a psychic call then it is subject to the other provisions of the regulations, which will often mean that the pair are playing illegal methods.
Drury is defined not to be a psychic control. My reference to it being a psychic control is practical. It is defined as a bid used to determine if partner's third or fourth seat opening was made on full values. And, as I understand it, the origins of Drury relate to a player who was known for opening extremely light in third seat. After suffering many disasters when first seat had a good passed hand, the partnership decided to use 2
♣ as a checkback to determine how sound opener's third seat opening was. To me, this is the very definition of a psychic control. But it is a psychic control that is now sanctioned as allowable under the ACBL convention regulations. And no one refers to Drury as a psychic control.
The concept of opening one of a major as a psyche in 3rd seat knowing that partner will use Drury to checkback rather than launch into game is interesting. That would be the classic definition of a psychic control, and would be illegal under ACBL convention regulations. But I have not run across it in my many years of playing. And the opening is not free from risk, as I have seen players leap to game in a major over a 3rd seat opening despite the fact that they play Drury.