Tonight, my LHO held
and over my 1C opening, she doubled. Partner subsequently played the hand in 3H and took a 2 way trump finesse the wrong way because of his expectations about the double.
After, when he enquired of the opponents what the double was, they told him it only showed opening points and had no shape requirement. They also play that overcalls are limited to less than an opener because they would double with opening values.
I have no quibble with their chosen method or, charitably, with the result on this hand. However, I feel we should know about this agreement.
A quiet chat with the director revealed that he thought the wording of the Australian regulations about doubles was murky and that only really unusual meanings of double should be (pre)alerted. He didn't think this fitted the bill. Is this meaning really unusual? If not, what would be?
The relevant Australian regulations read:
2.4 Self-alerting calls
There are five different types of self-alerting calls, viz.
Doubles
Redoubles
Cue bids of an opponents denomination/suit
All calls at the four level or higher, and
Any 2♣ response to a 1NT opening bid in an uncontested auction.
These calls carry their own alert and should not be alerted. It may be risky to make assumptions as to the meaning of such a call. You are entitled (at your turn to call) to ask for your own protection, but bear in mind that unnecessary questions may be more helpful to the opponents than to your own side, and may convey unauthorised information thereby limiting partners options.
3.1 Pre-alerts
3.1.1 At the start of a round or match, pairs should acquaint each other with their basic system, length of their one-level openings and the strength and style of their opening 1NT. Subsequent questions about these, whilst legal, may be regarded as unauthorised information.
3.1.2 This is the stage where you should draw the opponents attention to any unusual agreements you have which might surprise them, or to which they may need to arrange a defence. Examples: transfer preempts, unusual two level openings, canapé style bidding, very unusual doubles, unusual methods over the opponents 1NT or strong club openings, unusual cue bids of the opponents suit, etc. Pay particular attention to unusual self-alerting calls. These should appear on your system card, but should also be verbally pre-alerted.
3.3 Delayed alerts
3.3.1 At the end of the auction, the declaring side should draw attention to any unusual features, particularly any unusual non-alerted calls. Upon inquiry, you must disclose fully, not only the specific meanings of all calls, but also any inferences you have drawn from the auction based on partnership experience (as distinct from general bridge knowledge). These explanations may occasionally need to include negative inferences, such as hand types partner probably does not have for his bidding. Defenders must not, at this time, draw attention to their own calls, nor voluntarily offer explanations (they must of course fully disclose upon inquiry).
3.3.2 Takeout/negative-type doubles and penalty doubles do not require a delayed alert. If interested, the opening leader should enquire before leading, or his partner may enquire after the opening lead has been made face down.
So, what do you think?

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