2nd bid of overcaller after an initial Double

You intervened with a take-out double: Your partner responded
There are two types of "rebids" by the doubler, depending on the strength shown by his partner.

from 0 to 7HCP
between 8 and 10HCP
After a cue-bid (11HCP eand more)

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Exercise E5331 Pass : Your partner has less than 8HCP....No game in sight.

Your partner bid a suit without a jump: He has less than 8HCP

from 12 to 14-15HCP : pass ; the camp does not have enough values to bid game
With a fit and 16 à 17HCP : Show support at minimum level : If your partner is"maximum" a game may still be on
Without fit and 18-19 HCP : 1 SA is not minimum,, a game is possible
Without fit and 20-21 HCP : 2 SA All it takes is 4 points for partner and game may be on
Starting from 18HCP, without fit, you could bid a new suit (with at least 5 cards, in general...)
In other cases, a cue-bid will show 18HCP...and no other bid possible !
After a cue-bid (11H et plus)

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Exercise 5334 1 NT that shows a strong hand 18-19HCP (too strong to intervene with 1NT)

Your partner bid a suit without a jump: He has less than 8HCP
Examples

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Exercise 5332 Support at lowest level : With a nice 17HCP hand, propose game. Your partner will pass if is not "maximum".

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Exercise E5336 a NT bid is impossible with that miserable doubleton a♦. Show your strong 19HCP with a cue-bid

Your partner has shown a hand with 8-10HCP
Most of the time the conclusion will be easy. If the doubler wants to ask his partner for a ♦ stopper he'll use the cue-bid.
The partner's bid indicates 11HCP et plus bu using the cue-bid.
Name your 4 cards Majors

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Exercise E8574 The 3NT bid promises both a ♦ stopper and 4 cards in ♠ (Otherwise, he would bid 2NT in htis sequence which is forcing to game). A game at 4 ♠ sounds more promising.

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Detail specifications 45GZ - Level 2 ★

2nd bid of overcaller after an initial Double

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