[Joannecoop]

Hi there fellow bridge players.

In contract bridge, if the opposition opens one diamond and we don't ask what the one diamond means, is the opener's partner allowed to offer information about what the one diamond call means without us asking? In our situation, opener's partner said "That means at least four diamonds". I said she is not allowed to offer information unless we ask. An argument quickly ensued. I would appreciate it if someone could set us straight.

[jillybean]

The short answer, NO you should not be offering explanations of your partners call unless asked.
1D showing 4 does not require an alert or an announcement.


I'll leave the long answer to mycroft

[pescetom]

jillybean, on 2026-March-30, 09:35, said:

1D showing 4 does not require an alert or an announcement.

I'll leave the long answer to mycroft

The intermediate answer includes that in several jurisdictions, 1D showing 4+ does require an announcement
Perhaps not in ACBL.

In short, you should know and respect your regulations about alerts and announcements, in addition to the Laws of duplicate bridge which do not dictate such things.

[Zelandakh]

Alert regulations vary according to the regulating authority. In some jurisdictions, a player adding commentary like this would be UI and likely draw the ire of the TD: in others it is not only allowed but also required. You should also be careful in dressing down your opponents for some perceived breach of regulations. If this is indeed a RA where announcements are required, your actions might easily be interpreted as anti-social and result in a Zero Tolerance penalty. Rather than get in an argument over a regulation you yourself admit you do not actually know, why did you not call the TD and get an actual answer to your question? That is the point that I think you need to be set straight on more than anything else.

[mycroft]

In general:

• When playing face-to-face, all Alerts and explanations are made by the partner of the bidder.
  
• Alert what is Alertable (defined by your RA); do not explain without being asked.
  
• Announce what is Announceable (same deal); do not Announce an Alertable call (Alert instead) or a non-Alertable call (say nothing). Use the prescribed wording for your Announcements.
  
• When asked, a complete explanation of the call must be given (an Announcement is never "complete"; but usually is sufficient information that no ask is made). Specifically, I think everywhere, "the name of the convention is not sufficient explanation" (unless it is the specified Announcement, but see previous sentence).
  
• When partner's explanation differs from your hand, remember the following:
  • If partner's explanation is correct - you misbid - say nothing (but know that you must continue to bid as if partner had explained what you thought you were playing).
    
  • if partner's explanation is not correct, say nothing at the time (and try your best to not flinch). At the end of the auction, *if your side is declaring*, correct the explanation.
    
  • if your side is defending, you may not correct the explanation until the end of the hand, at which time you must. Please call the director in this case (if the opponents haven't already :-), as she is likely to be needed.
• Conversely, if *you* realize that you have misinformed (or failed to Alert/Announce as required) the opponents, call the director and correct the explanation.
  
• When playing with self-Alerts, such as on BBO, explain your own bids if they are Alertable/Announceable/just plain weird.
  
• When playing with screens, both partners Alert their screenmate, the bidder when they make their Alertable call, partner when the call is pushed through the screen.

As the others are saying, without knowing which RA you play under, we do not know if, *in this specific case*, an Announcement of 1♦ "minimum 4" is required. If it is not, no comment should be made unasked. If it is, then it was properly made.

In all cases, if you are concerned, call the Director and explain what happened. Do not lay blame, or get upset, or sound like you believe they're [-]ing; just state what happened, and maybe ask if there's an issue or if this was correct? And let the Director direct the conversation afterward. The Director Is Your Friend (but if the director *is* your friend, expect to be held to a high standard).

[jillybean]

pescetom, on 2026-March-30, 15:09, said:

The intermediate answer includes that in several jurisdictions, 1D showing 4+ does require an announcement
Perhaps not in ACBL.

In short, you should know and respect your regulations about alerts and announcements, in addition to the Laws of duplicate bridge which do not dictate such things.

What the heck do I know