[mike777]

Sorry for the long post.

I understand this is a basic version of modern Jacoby 2NT.

I get a bit lost by what or how the spiral responses work.
Can anyone explain in plain English how they work with examples?

Please assume I have no idea or experience with Spiral responses.

Thank you in advance.
---------------------------------------------------------------



Jacoby 2N Responses

1. 3C=any minimum

3D asks for shortness

3H=shortness

3S asks where

3N= void- next step asks (note: when H are trump, you cannot show spade void )

Steps 2-4 =stiff with spiral responses

3S= 5422

3NT asks for 4 card suit –spiral responses

3N=6+ M no shortness

4M=5332 with 1 or more controls outside the trump suit

3H=non min w void-3S asks w spiral responses

3S,3N,4C=Non minimum stiff spiral responses
--------

2. 3D=non minimum w shortness

3H asks

3S=void-Next step asks with spiral responses

3N,4C ,4D stiff spiral responses
------

3. 3H=non min with 5422 shape-3S asks w spiral responses

4. 3S=non min with 6322 or 7222 distribution

5.3NT =18-19

6. 4m=5-5 w/2 of top 3 honors in 2nd suit+ a control in the fragment

7. 4M=balanced with no control outside the trump suit

[jillybean]

I don't know spiral over Jacoby but will be interested to hear responses

I play
3C min hand, with shortness. (3D asks where, step responses)
3D any hand, no shortage
3H Club shortage , extras
3S Diamond shortage, extras
3N Shortage in oM, extras

[smerriman]

Don't know too much about spiral myself either, but I suspect there's no major relation between it and Jacoby 2NT, more that it's this partnership's preferred way to exchange information at later stages in auctions. Where you put honors in a fixed order, and then each time you have a card in that list, you skip the next bid, so partner can tell what you have / are missing.

[mike777]

Perhaps here Spiral is just short hand for

Step one= clubs
Step two= diamonds
Step three = Other Major

Will study more next few days

[smerriman]

Ah, I see, I thought it meant for continuations *after* you showed the suit. You're probably right.

[pilowsky]

I thought spiral was what happened just before completely going out of control.

[mike777]

pilowsky, on 2025-July-19, 22:39, said:

I thought spiral was what happened just before completely going out of control.

You are probably right 👍
I do know Spiral was an excellent French police TV show, see it.

Also so so movie.

[mike777]

pilowsky, on 2025-July-19, 22:39, said:

I thought spiral was what happened just before completely going out of control.

You are probably right 👍
I do know Spiral was an excellent French police TV show, see it.

Also so so movie.

[Roby]

https://www.bridgewe...acoby%202NT.pdf