Dealing with intervention over 1NT Opening

[barsikb]

Very common situation, right? Please recommend best sources on Internet. Thank you!

[TylerE]

Lebensohl or don't bother[1]

 

NOT "stolen bids" which are worse than natural.

 

[1] - Well, there are some other options like Ruebensohl, but they are a bit adfvanced for B/I

[wank]

Lebensohl or don't bother[1]

 

 

 

if you don't want to learn lebensohl - most people on bbo will never have heard of it - just play bids non-forcing, double take-out

[barsikb]

Lebensohl works only over natural overcalls, right? What if opps use Capp, DONT?

[barsikb]

Wank: "just play bids non-forcing, double take-out "

Where can I get well-written details on this, please?

[TylerE]

Lebensohl works only over natural overcalls, right? What if opps use Capp, DONT?

 

It can still apply over conventions. Just use a little common sense, and just pretend they overcalled naturally, so the stopper asks/shows revolve around whatever their primary shown suit is.

[ArtK78]

One of the most basic methods for dealing with intervention over a 1NT opening is the following:

 

Double - Penalty.

Simple bid of a new suit - natural and competitive, intending it to play. Less than game forcing values.

Jump bid of a new suit - natural, forcing (alternatvely, natural, invitational, and use cue bid as the only game forcing call other than a game bid).

Cue bid - game forcing Stayman. Opener should bid 4 card major suits up the line. Responder may have a long suit of his own. Since game must be reached, any below game bid is forcing.

2NT - natural and invitational.

All game bids - to play.

 

This method is simple. But there are many situations it will not handle well. For example, what do you do with a balanced strong hand without stoppers in the opponents' suit? That is why more complicated methods - takeout doubles, Lebensohl, Rubensohl, and others - have been developed.

[wyman]

Lebensohl works only over natural overcalls, right? What if opps use Capp, DONT?

 

If opps use DONT, you can treat their overcall as a natural 1-suiter and use your standard Lebensohl treatment.

 

If opps use capp, then you need a treatment over their:

 

penalty X

-- an easy treatment is that 2-any is to play, XX is to play, and pass is everything else. This is not best, but it's easy (and fairly standard).

 

2C = single suiter

-- just play systems on. X = stayman, and everything else as if there were no interference

 

2D = majors

-- This is based on "unusual over unusual" which applies when opps bid an unusual 2NT, and which is google-able. Again, it may not be best, but it's easy.

-- X = cards and willingness to penalize, invites partner to dbl for penalty. 2H = inv+ in clubs. 2S = inv+ in diamonds. 2N = natural inv. 3M shows a stopper in M. 3N is to play.

 

2M = M + a minor

-- treat it like a natural one-suiter and use lebensohl. Basically do this anytime they show two suits, but only one of which (the one they bid) is known.

 

2N = m's

-- unusual over unusual. X = cards and willingness to penalize, invites partner to dbl for penalty. 3C = inv+ in hearts. 3D = inv+ in spades. 3M is to play. 3N is to play. Can't have it all (e.g., looking for minor-stoppers).

 

Hope this helps.

[barsikb]

This does help a lot! Thank you, wyman, ArtK78, TylerE. I'll be back to this topic with examples later ;)