[kastan88]

Let the bidding go:

1♣/♦-(pass)-1♠-(2♥)-DBL*-(pass)-?

*= support double with exactly 3 cards

Is there somewhere in Internet some description, what kind of further options may have responder with10+ points? with 6..9 points with 6-card another minor than opener's? etc

[ONEferBRID]

I assume Responder here is 4s/6om with 6-9 hcp.
The weakest rebid, and you do have a weak hand, is 2S...with your 4-3 fit
A new suit bid, your other minor, or 3-of your partner's minor, should show a stronger hand and be interpreted as a gametry for your Major.

[kastan88]

I didn't think meaning of 1 or 2 possible 2-nd round bids. I am looking for complex system now, how to bid on - what is weak bids, what are inviters, what is GF bids and slam sequences. Is there some Lebensohl type 2NT on etc etc

[gnasher]

Lawrence's "Double" (2002) covers this in reasonable detail.

[helene_t]

I would assume
2♠: any 6-9(10)
2NT, 3openersminor, 3♠: app 11
3♥: GF
3otherminor: game force, unless opener's suit is clubs and we play a Walsh style that requires gf strength for bidding diamonds first, in which case it is 10-11

[Stephen Tu]

I think 3 opener's minor should be to play, non-invitational. I don't see why you should be forced to play in a dodgy 4-3 spade fit when you bid 1s on your Jxxx when you can easily make 3m in your 9/10 cd fit.

2nt inv NF, 3 new suit/opp's suit F1, 3M inv w/ 5+ suit.

[cyc0002002]

how about setting up a GB2NT in this sequence
does it work?

[helene_t]

I don't think GB2NT should apply here. Most weak hands are ok with bidding 2♠. So 2NT is better used as natural.

[P_Marlowe]

kastan88, on Jun 27 2009, 09:22 AM, said:

I didn't think meaning of 1 or 2 possible 2-nd round bids. I am looking for complex system now, how to bid on - what is weak bids, what are inviters, what is GF bids and slam sequences. Is there some Lebensohl type 2NT on etc etc

A follow up system would be depend on your responding style, certain
hand types wont play a role unless you play MAFIA or Walsh, since I am
not familar with MAFIA, this wont play a role.
Responding 1M, in case you have 4 diamoinds and a 4 card major does
not matter for the following, assuming standard:

After a 1D opening, it is possible to have a weak hand with 6 clubs and
4 spades, but it does not really make sense to sign of in 3C, what could
be a 6-1 fit, when you already have a sure 4-3 fit.

If you are 7-4, ... than you have to decide, if you want to go looking for
a fit in spades or if you want to play your 7 carder.
The point is of course, that you already made this decision at the time you
decided to respond 1M, so the overcalls did not harm you.

=>

2S is to play.
A new suit should be a game try for spades, since you will have
5 spades, the new suit cant be longer.
NT bids are natural, showing a stopper and only 4 spades.
Bidding openers minor suit would be to play, if you want to force, you have
the cue bid available.

With kind regards
Marlowe