smerriman, on 2021-September-30, 17:57, said:
I would open most 11-counts with 5♥4♣ at this vulnerability, so the "14 points" I mentioned are already a king more than a minimum opening. In fact, I'd open a bunch of good 10-counts, even without a sixth heart or fifth club. A lot of pairs place great emphasis on bidding shape, and will for example rebid 3♣ over 2♦ with a hand like ♠x, ♥ATxxx, ♦Kxx, ♣KQJx - the diamonds have improved, you get to show your second suit and 13 points is not, strictly, a minimum. All of these are extras (and it is very reasonable to bid this while simultaneously insisting 3♣ promises extras), but they are not points, and a misfit 13 opposite our lousy 15 does not make a slam. In fact, some partnerships may well rebid 3♣ on ♠xx, ♥ATxxx, ♦A, ♣KJT9x, all the while insisting it shows extras.
The first mention of "extras" specifically mentions 6NT, which is far from cold opposite a minimum 3♣ rebid. It would be nice to distinguish, say, 13-point shapely minima from 19-point powerhouses.
My second mention of "extras" was in the context of having already shown a non-minimum with 3♣, and I really think suggesting I implied otherwise is pedantic. The relevant question on the 2=5=2=4 hand shape is whether or not we can make 6NT (or possibly 6♥/6♣ in the 7-card fit), which takes far more than a minimum in context of the extras shown by the 3♣ bid. The problem is that partner might have third round rebid issues when trying to show those extra values.
The third mention lists 14 as the minimum, and I am specifically worried about missing a fine 6NT if partner is under the old-fashioned impression that we can count on a good 15-count for the 3♣, and hence does not take extra action with an OK 17 or 18. If, however, partner would also bid 3♣ with more shape-oriented hands (all the while still promising extras!), I expect partner to bid 4NT instead of 3NT over 3♠ holding the 17-counts, and I can safely pass 3NT instead.
In hindsight I should have just said I would bid 3♠, and let you guess at my motivation. So far I have learned nothing new, and I suspect neither have you, so my efforts have been a pure time sink.