Posted 2005-June-28, 17:20
There are a lot of possible wins and losses for opening 1NT. I'd venture to say that in a constructive auction, opening 1NT tends to be a loser. But nonetheless a lot of top players are leaning towards opening 1NT as often as possible. The wins/losses for 1NT opening would seem to include:
Win: Avoids problem rebids later in the auction. This is more of a systemic thing, but typically if you don't open 1NT with the appropriate hand, you will have trouble finding a call later in the auction.
Win: Immediately limits strength and shape. This places partner exceptionally well in a competitive auction, since he knows when to compete, when to double, and when to bid game.
Win: You usually get to declare the hand. This is obviously huge for a pro playing with a client, but even in a more equal partnership it is sometimes clear that hands will play better from your side (lots of tenaces).
Win: You preempt the opponents. Especially given the methods most people play over strong notrumps, it is often hard for them to bid to a game when we open strong 1NT. Finding the best partscore is also difficult when your bidding starts at the two-level, especially if you use double for penalty (i.e. over weak notrump).
Loss: You can miss light games in suit contracts. The two hands given are examples of this, and in general its fairly easy to construct hands where you have a great fit and partner just passes 1NT. Frequency-wise, this tends to be a worse problem with weak notrumps than strong, but it happens pretty much regardless of range.
Loss: You sometimes play the wrong partial. This is particularly likely when the right partial is a minor suit fit (with responder holding less than six of the minor of course).
Loss: Stopper-finding auctions are sometimes difficult. You can end up in 3NT with two small opposite two small, which is somewhat less likely after a natural suit auction. Of course, you might get lucky and opponents don't find the lead (1NT-3NT is very uninformative bidding) but they do seem to lead these suits more often than not.
Loss: You can be doubled for penalties, and 1NT may already be too high. Of course, this is a lot more of an issue with weak notrumps than with strong.
Honestly I think the reason more top players are opening 1NT is the second "win" up there -- people are competing more aggressively and its nice to get a pretty accurate depiction of your hand down early in these auctions.
Adam W. Meyerson
a.k.a. Appeal Without Merit