Not letting them play at the 2 level apply when they found an 8 card fit.
On the given auction they could be on as little as a 6 card fit if Opener is the type that opens 1♦ and rebids 2♣ with 3-1-4-5 shape and responder took ...
To answer the polled question we need to go back to partner's other options over 2♠ (as previously mentioned by Kopera and Clayton)
What would 2NT over 2♠ be?
I detest playing 2NT as Natural in competitive auctions (especially against two opponents who showed good values) but ...
Bud: "The heart ruff possibility is so much less than the club ruff possibility that it should be dismissed very quickly - declarer didn't raise hearts and bid 3S in tempo. And West might have led something other than the queen from ?QJ109 and a heart void.
The possibility of ...
Kit, this is a very dangerous way to interpret the laws.
What if they actually have agreed to play Drury (as their CC suggests) and simply forgot at the same time? We all know that Drury is the #1 most forgotten convention and that literally everyone forgets it when they ...
I don't think there is necessarily anything wrong with the methods.
High preempts work against strong artificial and undefined openings.
Maybe if partner doesn't have a big balanced or strong one suited hand then they shouldn't have opened 2♣...
There are two types of hands that ...
I just bid 6NT.
Suits might not break very favorably for us and the ♠Q might not carry full weight, although I wouldn't be shocked to find the ♠K in partner's hand.
Since the double only showed mild extras, if partner has a 2NT or jump rebid they ...
Although 4♣ over 3♥ should imply at least 6-5 in the black suits it doesn't necessarily help us.
I want to emphasize spades so I can hopefully use Exclusion later.
Another advantage of 3♠ is that it keeps the auction lower and gives partner more options ...
I agree with your points 1 (it is the opponents hand) 2 (they will not let us buy it for 2♠) and 4 (they will let us buy it for 4♠).
I don't agree with 3 - I think we need a lot from partner to make 4 ...