Opener's rebid after player in 4th seat overcalls

Opener's rebid after player in 4th seat has overcalled
After an overcall, Opener who has a minimum opening and isn't fitted after his P's responding bid, can pass : but Responder can bid again
1) Support fit in Responder's major

he has a 4 card fit and a minimum opening: support bid at the lowest possible level
with a 4 card fit a 2nd zone opening : jump raise

2) suit shift shows :

either a minimum opening with a two-suiter 5-5
or a strong opening and a two-suiter which might be 5-4.

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Problem E1002 PASS After an overcall from player in 4th seat, Opener has to pass with a minimum opening. This pass shows your P that you have nothing special to bid.

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Problem E1010 Support fit (by Opener) of Reponder's major at the 3 level isn't forcing. It shows a 2nd zone opening (15-17HCP) and an irregular hand, otherwise he would have opened 1NT

3) A NT rebid

P has bid
- 1NT with a robust hand, a 1st zone hand and a stopper in Overcaller's suit
- 2NT with a 3rd zone hand and a double stopper in Overcaller's suit
Partner has passed : in this case a rebid of 1NT shows a 3rd zone and a regular hand. Don't take any chances playing 2NT with 18HCP

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Problem E1001 With no major fit and stoppers in the overcalled suit try and see if a NT Game is possible.

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Problem 9577 1NT - no need to bid any higher to show your 3rd zone and a regular hand. Many players make the error of jump bidding to 2NT.

4) The Opener's Double.
After a 1-level response from the partner, it is used when no bid is possible with a strong hand. In this situation, it does not guarantee a 3-card fit, unlike the opener's rebid after an intervention in the second position.

A good opening hand
No natural bid suitable for the strength and distribution of the hand

``` 5) redouble after Sputnik double by 4th seat Opp has the same meaning 6) Opener's rebid of his opening suit shows

6-card suit
a minimum opening

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Problem E1004 After a 2♣ overcall a 2♦ rebid, shows a strong suit.

(7)Other bids

A cue-bid in the overcalled suit shows a good support fit and a strong opening.
Redouble shows 3 cards in Responder's major
After Partner's 2/1 suit shift, Opener's double remains punitive..
After a redouble bid by the team, all doubles are penalty doubles.

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Problem 9575 A Splinter bid translates into a good opening, a ♣ fit and a short (void or singleton) ♥ suit

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Problem E1008 Here Opener's cue-bid shows : a 3rd zone (18-19HCP)or a 4 card fit, or a NT contract to be played from the other hand.

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Detail specifications 44VZ - Level 3 ★

Opener's rebid after player in 4th seat overcalls

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