[maris oren]

---

What is the meaning of East's redouble?

[helene_t]

The standard definition of this redouble is:
- we have the majority of the strength
- I don't have a primary fit for your clubs
- I have interest in defending a doubled contract
- I don't have a 5-card major (and probably not a 5-card diamonds)
- from now on all doubles are penalty

A few pairs also require no 4-card major. Many pairs have the agreement that opps can't play an undoubled contract below (say) 3♦, or 2♦, depending on agreements.

You may occasionally run into some old-fashioned pairs that play the redbl as showing any 11+ (say) hand, as a change of suit would be non-forcing after the dbl. But the modern style is that a change of suit would be forcing so you don't have to redouble to show strength.

Some pairs play something similar to standard except that subsequent doubles are take-out instead of penalty.

And a few pairs play transfers so here rdbl would be a transfer to diamonds.

[nige1]

Maris Oren 'What is the meaning of East's redouble?'
++++++++++++++++++++
I now prefer Helene_T's last suggestion. The more modern agreement is that after 1any (X) XX = TFR which has the merit of simplicity and effectiveness.

---

[helene_t]

By the way, after other openings than 1♣, most pairs play that a new suit at the 2-level is not forcing, so rdbl can also be a strong hand with length in one (or more) suits that are lower ranking than the opening suit. But obviously that doesn't apply after a 1♣ opening.

[pescetom]

nige1, on 2021-February-08, 06:04, said:

I now prefer Helene_T's last suggestion. The more modern agreement is that after 1any (X) XX = TFR which has the merit of simplicity and effectiveness.

So say the auction is 1♣ (X) 1♦ (p) where responder has transferred to hearts, how does opener proceed?
What does his 1♥ mean and do any other bids have different meanings than they would over a natural 1♥?

[helene_t]

pescetom, on 2021-February-09, 07:59, said:

So say the auction is 1♣ (X) 1♦ (p) where responder has transferred to hearts, how does opener proceed?
What does his 1♥ mean and do any other bids have different meanings than they would over a natural 1♥?

Yeah, this is the same discussion as when you play T-Walsh. The three main schools of though are:
- accept shows exactly 3-card support
- accept shows a balanced 12-14
- accept show 3-card support OR balanced 12-14
I don't think the double changes this (other than that redouble becomes available, so 1♠ followed by 2♦ now can mean something else, I don't not what )