There was a hand at the club last night that our opponent was unsure how to bid. As it is a very simple and common hand, I thought it an interesting topic.
You are playing Acol with a weak 1NT (12-14) and hold:
♠ A102
♥ Q7642
♦ K9
♣ A75
What do you open?
The key principle when opening the bidding is to plan your rebid. I think almost everyone at the club will open this hand 1
♥ with the idea of rebidding 2
♥ if partner responds in a minor. The problem is what are you going to rebid if partner responds 1♠?
The first option is 2
♥ - this is not a call of beauty with such an anaemic heart suit, especially when it is only five cards. Ideally you would like to have six hearts for such a space-consuming rebid and my non-Acol readers will probably not understand how you can bid it with only five. I don't really understand it either so would not be top of my list of choices.
A second option is to raise spades. The lack of a fourth spade is troublesome but would be far more acceptable if you had a singleton elsewhere or perhaps a weak doubleton. But here our doubleton is strong and we'd prefer to try and protect it.
A third option is to rebid 2♣. Again partner will expect a 4-card suit for this bid, but at least it does imply a fifth heart. It is also a fairly safe bid, as partners get far less excited when they find a minor fit and will generally explore notrumps before leaping to the 5-level. And if partner is interested in slam, then we have good cards for this.
So, in a traditional environment I would respond 2♣ expecting things to work out just fine.
There are two other treatments that people can consider.
It is become more popular to open 1NT with a 5-card major. Here the 5-card suit is weak and getting across the balanced nature of the hand, together with the immediate definition of its strength, in a single bid looks attractive. Just because you occasionally open 1NT with a 5-card major does not mean that you should change my response structure - occasionally you will miss a 5-3 fit but the opponents will sometimes lead your 5-card suit. It is not sufficient reason to play Puppet Stayman or the like.
Finally, I looked at Eric Crowhurst's
Precision Bidding in Acol. His recommendation for this type of hand is to use a more artificial approach. He recommends playing the 1NT rebid as showing 12-16 points, so that you can rebid 1NT with a weak 1NT hand and a 5-card heart suit. Clearly this solves the problem, but it does mean that you have to play the Crowhurst 2♣ convention, which asks partner about range and major suits over the 1NT rebid. The 12-16 1NT rebid does mean that they are many more follow-up sequences to discuss, for example, what do 1
♥-1♠-1NT-3♣ and 1
♥-1♠-1NT-2♣-2
♦-3♣ show?
If you like the more convention approach then Crowhurst may be the answer for you. But remember to discuss all the sequences and what happens in competition.
Me? I'll just keep opening these hands 1NT.