nige1, on 2014-June-10, 18:48, said:
Is the following a fair summary of Trinidad's interpretation of the regulation?
Surely the regulation is much simpler. It is legal to open a natural 1NT. Natural means not more than 2 doubletons and no shortage. You may open 1NT as a deviation with a singleton on some hands but that must remain a deviation and not be systemic.
So the generally is essentially the same for balanced hands as the deviation of one card does for suit bids. If you define a call as a 6+ suit then it is legal to do so with 5 on occasion - it is
generally 6 but a deviation is allowed. The same for a 1NT opening with a singleton (deviation of two cards to one in the shortest suit). Similarly, you would not include an ask for a 5 card suit if the call was systemically 6+ as that would effectively be misinformation, not a deviation but systemically 5+. And the same for a 1NT opening - you cannot ask for the singleton because the singleton is not systemic, merely a deviation.
In this respect I feel the discussion about how frequently "generally" might be is a red herring. Of course I am not in ACBLland and do not know how it really works. But this reading seems completely logical and approximately matches what appears to be the most common interpretation. And yes, I think the interpretation is pretty silly but that does not mean that what Rik proposes has a snowball's chance in Hell of getting past a typical ACBL TD. And good luck on getting a change on this in the GCC anytime this decade...