[Bbradley62]

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1NT is explained as 20-21 HCP. Shouldn't that be 18-19, since I would have opened 2NT with 20-21?

[Bbradley62]

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See question above.

[mgoetze]

 Bbradley62, on 2011-February-07, 16:23, said:

1NT is explained as 20-21 HCP. Shouldn't that be 18-19, since I would have opened 2NT with 20-21?

Yes.

[Bbradley62]

Out of curiosity: are transfers on over this 1N rebid?

[barmar]

 Bbradley62, on 2012-January-30, 11:13, said:

Out of curiosity: are transfers on over this 1N rebid?

No.

I'm not sure why the 1NT rebid is so strong in this auction. If RHO bids a suit, it only shows 18-19, but after X it's stronger. The best I can see is that redouble can be used if you have less; its description is "Value-showing redouble -- 3+ C; 21- HCP; 16-22 total points".

The rule that says what it means is a default rule that can come up in a variety of auctions. It's defined in terms of the combined strength of you and partner, it says "bid 1NT if your points plus partner's minimum shown is 20-24, and you have stoppers in the opponents' suits". Since partner has promised 0 in this particular auction, that implies 20 for you. Since, as you say, you would have opened 2NT in this case, it means that this auction shouldn't exist.

Since the redouble is available to show your hand, it's not clear this needs to be fixed, except that idle bids are wasteful. Unless we should also redefine redouble (maybe it could show that the original 1♣ was a real suit).

[Bbradley62]

Similar situation:

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I still think 1N should be 18-19. Also, why doesn't North bid 3♥ instead of 3N?

[barmar]

The rule for 3♥ wants a twice-rebiddable suit, that suit is only biddable. The rule is not specific to this auction, it's just a default "what kind of hand do you need to introduce a new suit at the 3 level" rule.

[georgi]

Adjusted so it will apply for:

1X - pas - pas - Double
1NT - 18-19 and min length which was promised by 1X.

[Bbradley62]

Another one where I think the 1N rebid should be 18-19, since we open 2N w/5-card major. Even if 20-21 is possible for some reason of combination of strength and suit quality, I think 18-19 should also be possible.

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Also, why is North inviting game?

[Bbradley62]

I had another one of these today.

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Again, and still, I think this should be 18-19 since I would have opened 2N with 20-21.

[iandayre]

 barmar, on 2012-May-10, 13:13, said:

The rule for 3♥ wants a twice-rebiddable suit, that suit is only biddable. The rule is not specific to this auction, it's just a default "what kind of hand do you need to introduce a new suit at the 3 level" rule.

Except of course that this twice-rebiddable suit, had it existed, could and should have been bid at the one level. For the umpteenth time, the description of a delayed bid does not take into account the earlier pass. Not to mention the fact that we have all seen GIB bid weak 4 card and occasionally 3 card suits at the 3 level or higher.

Mind you, not often lately. Perhaps that has been improved. We will see.

And to the other regulars on this board - don't you wonder why Barmar jumped in so fast to respond to this post, and made no comments on any others? I don't know why, but I do wonder.

[Bbradley62]

 iandayre, on 2015-January-07, 21:51, said:

And to the other regulars on this board - don't you wonder why Barmar jumped in so fast to respond to this post, and made no comments on any others? I don't know why, but I do wonder.

Did you notice that posts #2 - #8 were from 2012?