Opener's 2 Carreau rebid Gameforcing

Opener's rebid : 2 ♦ Game forcing

Opener's priority in going for Game is to hide his magnificent hand and protect his tenaces.
except if his distribution is very irregular (very long suit or a void) a 2 NT rebid will be more frequent and not a suit bid with a 5 carder ...
A 3 NT rebid after a 2 NT response is absolutely forcing! The opener has slam ambitions.
It's the 4NT rebid that indicates a problem with aces.

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Problem E4800 3 NT : a forcing rebid looking for a slam (it's the 4NT rebid that indicates a problem with aces).

Opener's 2 ♦ rebid
Opener rebids 2 NT each time that his distribution is regular, so as to be contract Declarer and avoid a NT bid from his P ! The strong hand is hidden and the tenaces are protected.
A 5431 distribution with a 5 card major and considered regular by expert players.

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Problem 20056 In this case, don't bid 2 ♠ but bid 2 NT. You have a regular distribution and cards you need to protect. If you bid 2 ♠ and your P then bids 2 NT ... it's contract down for sure !

The conventional rebids by Opener
The suit of the ace in a major

When you bid 2 ♠ in response to a 2 ♦ opening and you have an ace in a major suit, it's absolutely necessary that you know the convention that shows you have a particular ace.
The Opener who wants to know which ace his Partner holds, jump bids to 4 ♣ after the 2 ♠ bid
The Responder bids 4 ♥ or 4 ♠ depending whether he has the ace of ♥ or the ace of ♠.

The Responder has already bid 2 ♥ and you have 5 ♥ cards and 4 ♠ cards.

If you bid 3 ♥ and if the Responder is weak (has already bid showing less than 8HCP) will not bid 3 ♠ if he has 4 losing ♠
To overcome this problem, using the convention a jump bid to 3 ♠ shows 5 ♥ cards and 4 ♠ cards...

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Problem 20055 If your P has the Ace of ♠, you will play a small slam : 6 ♠, if he only has the Ace of ♥, then the contract is only 4 ♠. It's important to know in which suit he has an Ace.

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Problem E20059 Here, jump bid to 3 ♠ to show a 5-4 hand ♥ and ♠. Good convention to know if you don't want to go down on a 3 NT contract !

Responders' jump bids
The jump bids

After Opener's 2 ♦ bid, and then a suit bid, all jump bids by Responder are suit fits.
A one level jump is a Splinter bid
A double jump is also a Splinter, this time with a void and not a singleton !

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Problem E20066 Jump to 5 ♣ to show a ♣ void and a ♠ fit.

Main

Detail specifications 15JA - Level 2 ★

Opener's 2♦ rebid Gameforcing

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