Those pesky opponents. Always interfering, preempting, bidding like they had something. Don’t they realize they should keep quiet? Make things easy for us? Unfortunately, those days are over. So we just have to get on with it, and figure out how to outfox them when they pull their crazy stunts.
Nowadays, opponents even bid over a strong NT! Don’t they have any respect at all? Fortunately, there are tools to deal with those brash upstarts. Lebensohl is one of them.
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Lebensohl is a convention designed by George Boehm to enable responder to deal with overcalls after a 1NT bid by opener. The original structure was:
1. a) A double of a natural two level overcall is for penalties
b) A double of an overcall showing two suits is for penalty of one of the two suits
2. A two level overcall is natural and non-forcing. Responder has a 5+ card suit and just wants to compete at a low level.
3. All three level bids are natural and game forcing
4. 3NT shows values for 3NT but denies a stopper in the enemy suit.
Responder may have a stopper in one of the suits if the opponent’s bid shows a two-suiter.
5. A cue bid shows four cards in the unbid major(s) and denies a stopper
6. 2NT forces opener to be 3C. Over the 3C bid, responder can:
a) sign off by passing 3C or by bidding a new suit lower in rank than the enemy suit
b) cue bid, which shows a stopper in the enemy suit plus a four card major(s)
c) bid 3NT, which shows values WITH a stopper
d) bid a suit higher in rank than the enemy suit, which is INVITATIONAL
The revised version simply reverses steps 3 and 6 in meaning. A bid at the three level by responder is now INVITATIONAL, while the 2NT bid forcing a 3C response starts a FORCING auction. This gives responder more flexibility, and gets his suit in quickly before the advancer (4th hand) can block bidding of responder’s suit by raising the overcalled suit, thus shutting his opponents out. This fine tunes the bidding war. Otherwise, when 1NT is overcalled by 2S, for example, and responder has a 6-card heart suit with 8-9 points, he can’t bid his suit without lying about his hand. A 3 level bid would be forcing; a 2NT bid will simply allow the opponents to bid 3S, at which point opener and responder are guessing. Opener doesn’t know partner’s suit or point count. With the reverse Lebensohl, responder can bid 3H, invitational, with no worries. Then is a 3S bid comes along, opener will know what to do. With a forcing hand, responder can bid 2NT; now if the opponents bid 3S, responder can bid 4H with no problem, or double if he feels so inclined.
For those of you who already play Lebensohl, this might come in handy. For those of you who don’t, you may want to consider it. It takes a while to remember it all, but it is very efficient and eliminates a lot of guesswork.
Meanwhile, you can see the problems all this overcalling causes the opponents. There are several conventions that help you accomplish this dirty work. Cappelletti (Capp) and DON’T are two of the most popular. Now that you can see how troublesome you can make it for your opponents, look these conventions up and try one out. They’re fun and can get you some good results. But beware, your opponents won’t like it one bit.