Quote
(b.) Canapé or possible canapé:
(1) The first bid in a canapé or possible canapé sequence.
(2) The rebid if in a suit that may be shorter than the first suit, following a possible canapé opening.
(3) The rebid in no trumps if it may conceal a suit longer than the first suit.
I play a largely Precision-based system with 5-card majors and 1♦ showing at least 3. But 1♦ may include longer ♣s (1♦ 1x 2♣ says nothing about which minor is longer). And we would also quite often consider opening 1M with 5M + 6m. So which opening bids and rebids are alertable as possible canape and/or possible non-canape after a potential canape opening?
A strict reading of the quote above suggests to me that
a.) 1♦ is alertable since it may be canape with both minors
b.) 1♦ 1♥ 1♠ is alertable since the rebid is in a suit that may be (indeed will be) shorter than the first suit, following a possible canape opening
c.) 1♦ 1M 2♣ is alertable since ♣ may be shorter than ♦ (as well as maybe longer)
d.) 1M is alertable since it may conceal a longer minor
e.) 1M any 2any is alertable since the second suit may not be longer than the first (and indeed most of the time won't be)
However, this also seems to involve an awful lot of alerting for rather little help to the opposition! Given that 1♦ can only be canape if it has both minors and that opening a 5-card major rather than a 6-card minor is the sort of thing that players of a standard system might choose to do anyway, would a more sensible interpretation of the above rules be that
a.) is alertable since 1♦ may conceal a longer ♣ suit
c.) 1♦ 1M 2♣ is alertable since this may NOT be canape
but
b.) is not alertable since 1♦ was never a possible canape incuding a major
d.) & e.) are not alertable since these sequences are not expected to be canape and the fact that it might be convenient to disregard the 6th card in the minor is no more than how anyone else might treat the same hand?
I am entirely willing to do whatever alerting may be regarded as necessary to ensure opponents are not misinformed, but I am also conscious that if we alert all opening bids and most rebids in what is essentially an entirely natural system then we are not exactly helping oppo....