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Quantative NT bids?


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I would like to know what kind of hand you use quantative nt on when pard opens something other than 1n. I don't have any money and can't buy any bridge books so if I can't find out here, can someone give me an internet site to go look at. the sites I have bookmarked now, don't refer to quantative bids. Thanks in advance.

Vicki

You probably won't respond with a quantitative 4NT to an opeing in a suit. Quantis usually apply after partner has bid notrumps (see my first post).

 

For example, in

1-1

2NT-4NT

 

East says "if you are maximal, we have enough for slam". That's 33 HCPs (with a 5-card diamonds a little less will do). West promises 18-19. So here, East has 14 HCPs. Typically a 3343-shape. (A four-card hearts or spades is possible if you play fourcards-up-the-line).

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I would like to know what kind of hand you use quantative nt on when pard opens something other than 1n. I don't have any money and can't buy any bridge books so if I can't find out here, can someone give me an internet site to go look at. the sites I have bookmarked now, don't refer to quantative bids. Thanks in advance.

Vicki

Yep... Imagine any 1x-1y-1NT(2NT) auctions.

 

i.e. when you get a powerhouse with 3-5-3-2 shape and partner opens 1, you bid 1 and he rebids 1NT. Now you know that you most likely do NOT have a fit, but imagine that you hold something like:

Ax-AKQx-KJx-QJ..

 

You simply can't bid Blackwood/Gerber because there is the (albeit small) possibility that opps have two top clubs <_< - so you need to find out if partner likes his hand or not.

 

You will most likely have gadgets to find out heart support with partner, but if he shows doubleton, 4NT will be quantitative.

(1-1-1NT-2GF-2NT-4NT)

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there are 4 possible meanings of 4NT:

 

-Quantitative

-Sing off

-6 key card blackwood

-5 key card blackwood

 

how to identify the 4 of them is not always easy.

 

Quantitative: when 4NT is bid after a natural 4NT bid from partner without opponent's interfering. Also after 1NT-2-2x-4NT but that is just an exception.

 

-Sing off: when partner is trying to play slam on a minor we haven't raised, the bidding is at 4 or 4 and we bid 4NT, it is a sing off to play there.

 

-6 key card blackwood: when we have raised 2 suits literarilly, 4NT is a 6 key card blackwood.

 

-5 key card blackwood: the rest.

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There are also the "unusual" meanings of 4NT, typically a 2-suiter:

(1)-pass-(4)-4NT* two fivecards (or longer)

(1)-pass-(4)-4NT* minors

 

1-(4)-pass-(pass)

4NT* (Clubs plus a red suit, maybe a three-suiter depending on the agreements about dbl)

 

2*-(dbl)-4-(dbl) Precision

4NT** Extra shape and please lead a diamond

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If you want to start on competitive auctions, there are lots more meanings of 4NT.

For example,

 

(1S) 2C (4S) 4NT = good 5C bid

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