Stephen Tu, on 2019-September-08, 10:47, said:
You have to cater your ranges to handle the hands that come up most frequently. On this hand, what advantage did bidding 1S ... 3S ... 4S gain you vs the people who just responded 4S the first round?
First of all, I disagree with bidding 4s as the first bid. The hand has way too much potential to give up on a slam just because they threw in a heart bid. If partner's subsequent 3c bid has values, you still are not out of the slam range. It's become narrower because partner is going to need more specific cards, but it's still there.
If partner can make a 3c bid on anything, either competitive or strong, you are now throwing darts trying to find the right place to play. You might as well bid 4s...except, WOW, partner has values, gets excited and now you are out of the last making contract.
In competitive bidding, it's important to establish who's hand it is. Just because they are both bidding, doesn't mean that it isn't your hand. Of course, they may actually have good hands for their bids and it really is their hand. The reason I think 3c should have values, is you don't know where the auction is going after that. Partner may go for 3n, 5c, 6c. They may bid 3h, 4h and now you are going to wonder about partner's double. A pass does nothing to describe your shape, but does a great job of describing your values. It doesn't say you don't want to compete, it just says you don't have enough to compete NOW. You also give partner room to accurately describe their hand. After 1c-(1h)-1s-(2h)-p-(p)- now partner can safely give up on any idea of slam. Now 2s becomes competitive, 3s invitational and 4s is clearly to play. Partner can double then pull 3c to 3d with minimal hand and bid 3d directly with more. That differentiation is not available if you don't give them the room with 3c. Because 3c elevates the level of the action, you need more to do it.
If you pass and they bid 3h, are you sure that is the right place to play for them? Is letting them play 3h (or 4) "selling out"? Imagine the defense if partner has a stiff club. Club lead, cash the spade A, then clubs maybe forcing partner to ruff so you get their (hopefully) spade K and give you a ruff. They are vulnerable, why go for 110 when 200 may be there.
Anyway, I'm beginning to tire of this. I can see I'm not going to change anyone's mind, so as I said initially, I'll wait for my next windmill to tilt at.