[harikannan]

Red vs white, I held:

AKT8
Qx
ATxxx
Tx

At MPs, in robot tournament, partner opened 1H and my RHO overcalled unusual 2NT. I doubled and LHO bid 4C. Partner bid 4H and RHO passed. Is 5C by me now asking partner to bid slam if he has second round club control, or, does it show first round club control? I am asking this because no one bid it and those who went to slam simply jumped to 6H.

Thanks.

[smerriman]

harikannan, on 2025-April-21, 03:13, said:

in robot tournament .. is 5C by me now asking partner to bid slam if he has second round club control, or, does it show first round club control?

no

[Cyberyeti]

5♣ is a club control.

What exactly did your X say ?

I would bid 4♠

[harikannan]

When playing with human partner, what would 5C mean here, given that i didn't control bid 4S?

[harikannan]

Cyberyeti, on 2025-April-21, 03:39, said:

What exactly did your X say ?

Double showed the description 10+ HCP, penalty.

[pescetom]

harikannan, on 2025-April-21, 03:41, said:

When playing with human partner, what would 5C mean here, given that i didn't control bid 4S?

That you control clubs but not spades.
The more interesting question is what should he now bid controlling spades but not diamonds (for us, 5D).

[harikannan]

pescetom, on 2025-April-21, 04:07, said:

That you control clubs but not spades.
The more interesting question is what should he now bid controlling spades but not diamonds (for us, 5D).

Because missing both controls, you obviously wouldn't cue bid? So, when only one suit is overlooked by a cuebid, it denies control in the overlooked suit and shows control in the bid suit but when two suits are overlooked, it asks for control in the bid suit, right?

[mike777]

harikannan, on 2025-April-21, 03:13, said:

Red vs white, I held:

AKT8
Qx
ATxxx
Tx

At MPs, in robot tournament, partner opened 1H and my RHO overcalled unusual 2NT. I doubled and LHO bid 4C. Partner bid 4H and RHO passed. Is 5C by me now asking partner to bid slam if he has second round club control, or, does it show first round club control? I am asking this because no one bid it and those who went to slam simply jumped to 6H.

Thanks.

Fwiw I would try 5H over 4H.
Option 2 simply blast six.

As to your question of asking versus showing, I was taught the meta agreement of showing.

[pescetom]

harikannan, on 2025-April-21, 04:19, said:

Because missing both controls, you obviously wouldn't cue bid? So, when only one suit is overlooked by a cuebid, it denies control in the overlooked suit and shows control in the bid suit but when two suits are overlooked, it asks for control in the bid suit, right?

Not exactly.
In general, when one suit is overlooked by an early control-bid there is no problem, if partner continues to control-bid then it is implicit that he also controls the overlooked suit, otherwise he would have returned to trumps.

But this obvious logic fails in the particular case where the first control-bid is in the second side suit, overlooking the first. Now if you require partner to control both first and third suit to bid the third then you will both have to stop and miss slam in the case where only he controls the first suit and only you control the third (think it through). This was neatly described by Belladonna as a "bidding squeeze".
The clean way to break the squeeze is that partner's bid of third suit affirms control of the overlooked first suit and says nothing about control of the third suit: now we are back on level ground again and everything drops back into place (think it through).
Some claim to follow other agreements here, but in reality many of them are playing (consciously or not) a Weasel variant (fast/confident bid of third suit affirms control of both suits, slow/concerned bid casts doubt on third suit).

[harikannan]

At last, i got it. Thank you pescetom.