[straube]

Thanks for your thoughts. I do think your structure is an improvement over Keri. The only drawback I can see is the loss of being able to play 2D and that's very small.

As to your concern for my structure, opener would never choose 3N with a minimum and 3S/2H. He'll just accept the transfer to 3H because responder will either have 6 hearts or 5 hearts that are strong enough for him to choose a 3H contract. With a poor heart suit and 4S/5H, responder will rebid 2N. I admit that's not the selling point of my structure. However, a common standard treatment goes 1N-2D, 2H-2S which shows 5H/4S GI; now opener can choose between 2N and 3H (knowing when a 5/3 heart fit exists), but he certainly can't play 2H.

My structure is about getting to the right game and slam. Btw, I heard from Klinger that he no longer bothers to show invitational hands with a minor. I.e. 1N-2C, 2D-3m is not a 6-card suit GI. He thinks it just isn't worth it.

[fromageGB]

woefuwabit, on Sep 30 2009, 03:42 AM, said:

fromageGB, on Sep 30 2009, 05:02, said:

However, there is also imprecision with responder's suit being perhaps 4 or perhaps 5, and if my partner shows a 5 card major invitational hand when I open a NT, I would like to bid game with 4 card support, even if minimum.

Erm.. both Keri and my structure allows for that.
In Keri and my structure, after 1NT - 2♣ - 2♦ - 2♥/2♠, 3♣ is bid with minimum and good 4 card support with a doubleton.

I was thinking of the sequence 1NT 2♣ 2♦ 2♠ (4 card or 5 card). Now a minimum opener bidding 3♣ could be too much on a 4/4 fit. But I suppose nothing's perfect, and it's a price you are happy to pay. The outside doubleton does help, though.