system over nat overcall?

[gwnn]

We use (1NT)-2M as a natural overcall, usually 6 decent cards (solid values vs weak NT, potential noise vs strong NT). What's the best structure over this? We really like Robson-Segal, but would that mean that almost every response is fitted? Any ideas? Thanks in advance.

[helene_t]

Over a strong NT, it makes sense only to bid with a fit. You aren't looking for 3NT after the opps opened 1NT.

 

Against a weak NT, you may be looking for 3NT.

[whereagles]

You can treat this overcall in the same way as (1x) 2y (non-jump)

 

(1NT) 2M

 

Now advancer bids:

 

2♠ (over 2♥) = F1, constructive

2NT = fit, inv+

3m = F1, constructive (fit-bid if by passed hand)

3M = noise

 

Easy, no? ;)

[MFA]

New suit is F1, 2NT invitational, 3M invitational.

[jtfanclub]

You can treat this overcall in the same way as (1x) 2y (non-jump)

 

(1NT) 2M

 

Now advancer bids:

 

2♠ (over 2♥) = F1, constructive

2NT = fit, inv+

3m = F1, constructive (fit-bid if by passed hand)

3M = noise

 

Easy, no? :P

I happen to like...

 

2NT=invitational, forcing to 3M.

3M=noise, interest in sacrificing over their game bid.

new suit= constructive, NOT forcing.

Jump in a suit= Splinter.

 

I don't like generic new suit forcing, not when the opponents have some strength...you only really need new suit forcing when slam is a possibility. Fit bids should work, I would think.