First deal of a Chicago; all players of "world class" as defined on BBO and some of them as defined by the world; stakes £30 per 100.
You, South, open 1NT (15-17). Yes, I know. For no bonus credit at all, guess who you are.
West bids 2♠ - natural, no conventional defences permitted.
North bids 3♠. This is defined within the game as "Stayman in principle, but if that's not what he has, he will have some other kind of game force."
East bids 4♠.
You bid 5♥, which West doubles.
North bids 6♣, East passes, and we have finally arrived at the point where the poll question becomes operative.
You need to know that:
If North had doubled 2♠, that would have been penalty;
If North had bid three of a suit other than spades, that would have been natural and non-forcing;
If North had bid four of a minor, that would have been natural and forcing;
Lebensohl is not permitted;
North has no way specifically to ask you to bid 3NT with a spade guard.
Well?

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