[helene_t]

 gordontd, on 2012-March-19, 02:35, said:

Wouldn't you rebid 2♠ with the same hand in "standard"?

Probably yes (although 2NT may be an option for some). But the difference is that in most systems, 2♠ is forcing so at least you won't be playing 2♠ in a 5-1 fit. Also, responder's subsequent 2NT, 3♦ or 3♠ bid may be forcing, giving responder some tools for finding the best strain. In Acol, all three are NF for most pairs.

[gwnn]

 jallerton, on 2012-March-19, 01:52, said:

Interesting. To extend this principle, suppose Responder is 1444. Are you suggesting that the auction might start 1♠-2♣-2♠-3♦? If so, it would be dangerous for Opener to ever give preference to 4♣.

I guess you could start with 2♦ and rebid 3NT after 1♠-2♦; 2♠-3♣; 3♦-. I admit it's not too pretty though.

[gordontd]

 helene_t, on 2012-March-19, 04:43, said:

Also, responder's subsequent 2NT, 3♦ or 3♠ bid may be forcing, giving responder some tools for finding the best strain. In Acol, all three are NF for most pairs.

I don't think any of these three is forcing in "standard".

[TMorris]

 helene_t, on 2012-March-19, 04:43, said:

Probably yes (although 2NT may be an option for some). But the difference is that in most systems, 2♠ is forcing so at least you won't be playing 2♠ in a 5-1 fit. Also, responder's subsequent 2NT, 3♦ or 3♠ bid may be forcing, giving responder some tools for finding the best strain. In Acol, all three are NF for most pairs.

I agree 2 ♠ in Acol is non-forcing but it would be rare to play in the 5-1 fit as with 0/1 ♠ one would very often have enough to bid 2NT after an initial 2 level response.

[helene_t]

 gordontd, on 2012-March-19, 05:18, said:

I don't think any of these three is forcing in "standard".

I thought the terminology was:
"Standard" (with quotation marks): Acol w/ strong NT, or Goren, or something similar
Standard (without quotation marks): SAYC or Lawrence 2/1 or something similar.

[gordontd]

 helene_t, on 2012-March-19, 05:44, said:

I thought the terminology was:
"Standard" (with quotation marks): Acol w/ strong NT, or Goren, or something similar
Standard (without quotation marks): SAYC or Lawrence 2/1 or something similar.

I'm not familiar with that terminology, but I don't think any of those auctions is forcing in sayc, and I would have thought Standard means not 2/1.