barmar, on 2012-October-17, 17:52, said:
Wow! North met his partner two minutes before game time and agreed to play "Half Bergen" over a double or Jordan showing precisely three card support, all without any discussion?
I don't think we can just start filling in North's convention card with unorthodox agreements just because we're trying to rule mistaken explanation instead of mistaken call. It seems clear to me that North never agreed to play Bergen over a double, and ticking Jordan 2NT suggests that his understandings over a double are different. If North really wanted to agree some form of Bergen/Jordan hybrid, it would be indicated on his card.