[geofspa]

Hi

The other day this bidding sequence came up and my partner gave it one treatment and I another. (Unopposed bidding)

1NT(15-17) - 2♣
2♠ - 4NT

I don't know that hands this strong occur together too often so we had not discussed this sequence.

My question is about the 4NT bid which I think should be quantative as there are forcing bids available with a fit although my partner thinks it is fit showing and should be Blackwood (of whichever flavour you have earlier agreed)

Please discuss

Geof

[mtvesuvius]

"Standard" would be quantitative.

Quantitative without a fit is better because either you can use 4♣ as 1430 Gerber, or use some form of Baze, where 3 of the other major is a forcing raise with Shortness, 4♣ is Quantitative with a fit, and 4♦ is Keycard (you can reverse the 4m calls if you wish, I prefer this method though).

[TWO4BRIDGE]

Here is my reply ( # 8 ) to jillybean's similar thread ( http://www.bridgebas...208-an-auction/ ) last December:

One popular structure :

1NT - 2C
2S - ??

3H! = fit, shortness somewhere; next step (3S!) asks
4D! = fit, no shortness, artificial slamtry
4C! = fit, RKC Gerber for Sp

3C/3D = no fit, longer minor suit
4NT = no fit, quantitative

[ggwhiz]

Quantitative here and the suggested structures are good. Just for ease of memory, we only play the 3 of the unbid major as a general slam try portion to turn a future 4nt bid into blackwood.

If you proceed over 4nt, how?

We respond RKC with interest and on the more standard 1nt - 4nt, respond straight Aces followed by 4-card suits up the line from there, stopping in a 4-4 fit if we find one or 6nt. 5nt after a response to 4nt would be to play.

[mike777]

1nt=2c
2s=?

3h=forcing with 4s, slam try, invites cue bids
4c= shortness in c, 4s, invites further cuebidding
4d=shortness in d, etc.
4h=rkc for spades
4nt=quantitative

1nt=2c
2h=?

3s=forcing with 4 hearts, slam try, invites cue bids
4c=shortness in club 4h, invites further cuebidding
4d=shortness in d, etc
4s=rkc for hearts
4nt=quantitative