After an auction such as:
LHO Partner RHO You
2S DBL Pass
3C
your partner often has a difficult decision when he holds extra values. Since there is such a wide point range for your minimum response (0 to about 9 points -- or a bit more if your suit is a minor), he doesn't know whether it's safe to bid on.
The Lebensohl convention was invented to help you give partner a more accurate description of your strength in these situations. After an opponent opens a weak two-bid and your partner makes a takeout double, your bid of 2NT is Lebensohl. It is not a natural notrump bid and it says nothing about what suits you might hold. It asks partner to bid 3C, and you can then pass, sign off in a suit, or make another descriptive bid.
LHO Partner RHO You
2S DBL Pass 2NT
Pass 3C Pass Pass
or 3D or 3H
The doubler will accept your relay with any hand of up to about 18 playing points, but he can refuse the relay if he has a very powerful hand. With a hand that will make game opposite an average of about 4-5 points in your hand. he should refuse the relay and make another descriptive bid. If he bids higher than 3C, it is forcing; you must bid again, even if you are very weak.
You can also use the Lebensohl 2NT to invite when your suit is higher in rank than the preempter's suit. If LHO opens 2H and you have spades, you can sign off in 2S if you're weak. If you instead use the Lebensohl 2NT sequence and bid spades at your next turn, it shows invitational values (8-10 points). This full auction would be:
LHO Partner RHO You
2H DBL Pass 2NT
Pass 3C Pass 3S
If LHO opened 2D, you can use this type of auction to invite in hearts or spades.
The Lebensohl 2NT sequences above all show limited values. If you have invitational or forcing-to-game strength, your jump responses can all retain their standard meaning.
Here are some simple uses of Lebensohl:
LHO Partner RHO You
2H DBL Pass ?
43 7542 J1053 K84 -- Bid 2NT (Lebensohl). Over 3C, you'll bid 3D to show the very weak sign-off hand.
J5 Q654 Q64 Q753 -- With Lebensohl, you can't make a natural 2NT bid. This is a very poor 7 points, so evaluate it down and use the Lebensohl 2NT. You'll pass partner's 3C.
K52 732 AJ643 75 -- Bid 3D to show constructive values. If partner has extra values, he'll bid on.
AQ83 742 K873 J9 -- Bid 2NT (Lebensohl). You plan to invite by bidding 3S over partner's 3C.
AQ1084 4 A1097 1073 -- Bid 4S. This hand is too good for a Lebensohl sequence, which partner can pass.
Immediate 3NT (2H-DBL-P-3NT) = Good stoppers in the opponent's suit. Usually denies 4 cards in the other major.
Immediate cuebid (2H-DBL-P-3H) = Asks doubler to bid 3NT
with a stopper.
(This can also be used to start the description of a one-suited
slam try -- see below).
Lebensohl can help you improve your bidding accuracy when you have a good hand, but only 4 cards in the other major. Since the takeout doubler may have only 3-card support for your suit, it's helpful to give him specific information about your length in the other major and your stoppers in the opponent's suit. To do this, start with the Lebensohl 2NT (ostensibly showing a weak hand), and then follow with a cuebid or 3NT:
LHO Partner RHO You
2H DBL Pass 2NT
Pass 3C Pass 3H
or 3NT
Lebensohl, then a cuebid (3H) = 4 cards in other major, but NO stopper in the opponent's suit.
LHO Partner RHO You
2H DBL Pass 2NT
Pass 3C Pass ?
Lebensohl, then 4C or 4D = Two-suited slam-try with that suit and the other major. (If the opponent opened a weak 2D, Lebensohl followed by 4H or 4S shows that suit and the other minor.)
Lebensohl, then cuebid at 4-level (4H) = Two-suited slam-try with both minors. (If the opponent opened a weak 2D, Lebensohl-then-4D is a slam-try with both majors.)
Copyright © Karen Walker