mikeh, on 2020-July-29, 12:20, said:
I don’t think that many, if any, serious partnerships use the old J2N structure, where a new suit by opener, at the 3-level, shows shortness. For example, one common approach is that 3C shows a useful minimum, and responder, if still interested, bids 3D to ask for shortness: 1st step, none, 2nd step clubs, and so on.
I think we're passing each other somewhat on this point. I agree that few serious partnerships do, or should, use the old Jacoby 2NT structure. But, seemingly, the partnership in this thread did. I'm not endorsing it, and agree with all your commentary around how other agreements would result in more rational auctions.
mikeh, on 2020-July-29, 12:20, said:
Are you seriously suggesting that 5S would be in danger? And the slam bidders are not placing magic cards. Had south the heart queen, it’s cold. Had north 4=4=2=3 shape, or many other shapes, it’s cold. Basically it fails when the red suits mesh poorly. I used to play a relay method, in which responder could, by the 5-level, know shape, controls, and queens, and now slam is missed (and maybe south has J10x in diamonds, and its cold on a non-diamond lead and 75% otherwise. Add the diamond jack to the south hand, and you’re the one missing a superb contract.
I definitely believe that 5
♠ can be in danger when Responder has hands that would choose to stop in 5
♠. There seems to be some weird group think here that Responder is somehow holding something close to a minimum for this sequence, and that's just nonsense. South's 3
♠ bid shows an intermediate or better (15+) hand in the old Jacoby 2NT structure, obviously upgrades are allowed. Responder would be negligent not to show slam interest with a hand that had something like an average 14 HCP. And, I think such a hand would struggle to stop below 5
♠. And, the hand that does stop in 5
♠ is going to be a worse hand than this one, and the contract will face similar odds of success due to that decrease in quality.
As it turns out, this hand is a 4333 17 HCP hand, which in my mind is an immediate downgrade due to the shape. Furthermore, the Q
♠ is wasted, not that Responder knows that. So, this hand probably turns out to be worth something like 13.5 HCP. But, again, Responder cannot know that until Opener bids 5
♠ showing the extra spade length. And here comes the problem, now it's an absolute guess for Responder. Is Responder really to believe that Opener upgraded their hand this much based solely on trump length? Why can't Opener have just one extra card like the J
♦ (or more!) that this hand needs to have good play? 3
♠ has completely over sold this hand at this point.
In fact, I think it's negligent for Responder to allow the partnership to stop below 6
♠ once 3
♠ has been bid. The only problem with bidding 6
♠ immediately in response with a hand like this are the grands that you could be missing.
Perhaps I'm wrong, but, it feels like peoples' thoughts are being polluted by the fact that with different agreements you'd have non-minimal responses available. I think this reality is polluting peoples' ideas of a minimum within the old style structure, which is the EXACT problem with the old style structure. The reason that structure sucks is precisely because of hands like this. Even in this post, you are still calling to other structures that support how this hand can stop below 6
♠, but make no attempt to comment on the actual structure that was available. In this structure, Responder is sometimes going to put down hands that are a full king worse than this hand, with marginally better shape. Those hands are going to have no play if you're bidding 3
♠ on hands like this.
mikeh, on 2020-July-29, 12:20, said:
It’s easy to be an expert bidder, seeing all of the cards. The rest of us struggle, and occasionally overreach. C’est la vie.
I'm absolutely not the type of analyst who looks at all the cards when commentating, I've always supported your criticism of those that do so on these forums. It's my perception that there is a bit of a fantasy narrative going on here that Responder is ever stopping below 6
♠ after Opener bids 3
♠ with this hand and this set of agreements.
Rather, I'd say that either peoples' thoughts are being polluted as I mentioned above, or those justifying 3
♠ here given the actual agreements are the ones justifying the bidding while looking at all the cards. The suggestion that this 9 HCP hand is an automatic upgrade to a hand with intermediate playing strength in this sequence really comes across as a rather disingenuous one. I think the vast majority of players would grit their teeth and bid either 3
♣ (despite it's problems in devaluing Responder's club honours) or 4
♠. Does anyone seriously believe that 90% of people are bidding 3
♠ as Lamford's poll claims? It seems far more likely that those players like to perform analysis while looking at 52 cards.