kgr, on 2013-August-21, 10:47, said:
My question comes from a discussion with my partner.
We agree that opening 1♦ is better with the weak hand:
e.g with:
xx=Qxx=AJxx=KQxx
1♣-(1♠)-DBL-(Pass)
versus
1♦-(1♠)-DBL-(Pass)
=> To my surprise this agreement is not in line with forum posters above.
We disagree about the strong hands. My partner also prefers to open 1♦ with the 18-19 hand, but with that strength I prefer to open 1♣, as I don't see the need to open 1♦.
With regard to the disagreement that needs resolution, I am sure most here will agree with you, as the strong hand will usually have a good continuation. What that is depends on your use of the simple completion, NT rebids, etc.
What I would suggest is that you both think about using 1
♣ with all balanced 12-14 hands. Are you opening 1
♦ on a 2344 shape just in case LHO bids a spade? What do you do when opponents pass and partner has hearts? You seem to have lost the ability for him to show the length and the strength. Say a 9 count 5 card suit that leaves you probably struggling to find the right contract?
For your problem hand where it goes 1
♣ (1
♠) X (p) then it obviously depends on your agreement of what partner's bids mean in this circumstance. If he is showing exactly 4 hearts, then I would be happy to rebid 1NT. Not having a stop in their suit is not a disaster at the 1-level and it may be the best contract, and you have not distorted your shown shape, as you would on your alternative bidding. If the X is 4 or 5 hearts less than invitational then I would rebid 2
♥ on a 3 card suit. Partner is aware that this may be 3, so will not normally continue if he has 4. (We have other bids for invitational+ hands.)