mikeh, on 2022-September-30, 11:00, said:
I don’t understand why our follow up actions are difficult after most rebids by partner. Plus, to me, 2N suggests we’re taking control rather than trying to describe our hand to partner. I strongly believe in collaborative bidding at the early stages of constructive auctions unless it seems clear that taking charge right away is best.
If partner rebids 1N or 2H, we can bid 4H
If partner bids 2m, we bid 4SF or 4H. We really have no slam interest opposite a 2D rebid. Opposite 2C, 2D is cheap and might catch an improbable 2S or even 3S (say AJx AQxxx x KQxx)
I don’t know your follow ups over 2N but I suspect opener’s first clear picture of the main feature of your hand will be when you lay down dummy.
No, I play de Maas, which makes opener captain. The followups are not at all similar to popular conventions like Jacoby. Also note that my 2NT is limited, approximately good 9 to bad 14. Opener really has a pretty detailed picture of what is going on, and can ask for 3 versus 4(+) card support, shortness, min/max or just blast game.
I play Gazzilli over 1
♥-1
♠, so over for example 1
♥-1
♠; 2
♣*-2
♦*; <any>-? I have no way to show 3-card heart support. Similarly, if partner jumps 1
♥-1
♠; 3m-4
♥ might work well but loses the option to investigate slam if partner has 6-5 or so (picture
♠Ax,
♥AQxxxx,
♦-,
♣Txxxx).
In addition I think the 4SF standard route isn't all that good either. Let's say the auction (standard) goes 1
♥-1
♠; 2
♣-2
♦*; 3
♣-3
♥. Is this 3-card support, or a punt with diamond weakness, suggesting the 5-2 fit over 3NT? Are we looking for slam or are we scrambling for any game?
Direct support risks losing a spade fit (though I have ways to recover over 2NT), and the more serious risk is that partner will jump to 4
♥ with spade shortage, hoping to push the opponents out. But I think we're going to game regardless, and we'll find a secondary spade fit with our slam investigation scheme over 2NT anyway. As a plus, on the auction 1
♥-2NT; 4
♥ we might bait out a spade lead, or at least we haven't disclosed more than strictly necessary. Sometimes we'll play in a 5-3 heart fit when a 5-3 or even 5-4 spade fit exists, but it's low frequency enough to have a minimum GF double major suit fit without the opps interfering that I'm prepared to risk it. And if they do interfere with both minors I prefer showing support immediately over showing some spades (can be 4).