[ArtK78]

awm, on May 8 2008, 04:28 PM, said:

(3) You can't change your methods during a session, except to devise defenses to your opponents methods. So it's not legal to switch systems when you see who your opponents are, or decide to play weak notrump because your opponents are playing DONT.

That last point is not clear. There is nothing published (at least, nothing that I have seen) that says you cannot change your methods when you find out what the opponents' defenses to your current methods are.

That is the topic that was under discussion earlier.

This is not a subjective matter. This is an objective bridge matter. If you have an agreement that you will play weak notrump if the opponents are employing DONT over strong notrumps, that is not subjective. The issue is whether it is a legal agreement.

[Mbodell]

Another thing that I've heard someone suggest in a fun zip ko type setting is to agree to play whatever the opponents play. Then your system becomes whatever they are playing. I'm not sure if this agreement is legal either, but again it isn't subjective.

[barmar]

Mbodell, on May 8 2008, 07:19 PM, said:

Another thing that I've heard someone suggest in a fun zip ko type setting is to agree to play whatever the opponents play. Then your system becomes whatever they are playing. I'm not sure if this agreement is legal either, but again it isn't subjective.

I've mainly heard this strategy as a way to get around the rule against looking at your own convention card. You're allowed to look at your opponent's card when it's your turn to bid.

What would be more interesting would be if opponents exchanged CCs at the beginning of a round, and then each has to play what they receive.