[cjames]

I think I would go for passing..

[helene_t]

awm, on Jan 31 2008, 09:05 AM, said:

So if I open 1M, and it promises some cards in the major I bid but also guarantees length in some other suit, that's just a treatment?

But if I open 2M, and it promises some cards in the major I bid but also guarantees length in some other suit, that's conventional?

I don't get it.

I don't get it either, but maybe the Auken/vonArnim major suit openings are treatments and the Napolitan major suit openings are conventional. Not sure about Muiderberg, then, but reverse Muiderberg (4M5+m) would surely be conventional. Something like that. On a Canape-scale where 0 is longest-always-first and 100 is 2nd-longest-always-first, everything above 61.5347 is conventional

[hrothgar]

awm, on Jan 31 2008, 10:05 AM, said:

So if I open 1M, and it promises some cards in the major I bid but also guarantees length in some other suit, that's just a treatment?

But if I open 2M, and it promises some cards in the major I bid but also guarantees length in some other suit, that's conventional?

I don't get it.

I thought any bid that promised length in some other suit (besides the one bid) was automatically supposed to be conventional. Apparently "conventional" has something to do with how old an approach is?

You're confusing a "canape" bidding style with a bidding style where a given set of openings shows a two suited hand.

As a practical example, lets assume that you are playing Blue Club (one of the best known canape style systems). You get dealt the following:

♠ QJT964
♥ K54
♦ A42
♣ K2

This is a clear 1♠ opening. You intend to rebid 2♠ over 1NT or 2X.

For what its worth, I'd argue that an agreement that a 1M opening guarantees length in some other suit is conventional. In a similar vein, an agreement that a 2M major opening guarantees length in another suit is also conventional.

However, none of this discussion applies to canape.

[pclayton]

Yesterday in the KO's I picked up ATxxx QJTxx xx K. I passed and Hamish Bennett at the other table opened 1S. He got to a hopeless 4H opposite pards 10 count. Gene Simpson at my table didnt think this was an opener either.

[skjaeran]

I'd pass this.
If I was going to open, I'd bid 1♦.

[mike777]

grrigg, on Jan 31 2008, 02:47 AM, said:

Canape means that you are allowed to have a longer minor than a major. Opening one major promises a 5-card suit with a possibility of a longer minor. The opening bid doesnt promise another suit, but you might have it. Is there really a system that makes 1M a two suited opening?

2M as major + minor actually shows two suits, not as possibility (you could also just decide to open 2M as weak 2 on 5-5) but as a guarantee. I think there is a clear difference.

YES See Bridge Encyclopedia "Simple Club"

1D or 1H or 1S openings promise two suits at least 5-4 100%. Canape openings at one level very often but not 100% but always two suits.

Yes that means you can open one major with only 4 cards in major and longer minor or other major suit, very often.

Been around long time, I played it more than 20years ago.