[Swammerdam]

Bidding questions:

You are 4th to speak vul vs non and hold AJ98 K3 K7 AKJ74

The bidding proceeds Pass Pass One_Club.
A. What call do you make over 1C? What's your second choice?

I play that 1NT shows 16-19 points and a double club stopper.
If you bid 1NT partner bids 2D, with the opponents passing throughout.

B. After bidding 1NT and hearing 2D what do you do now?

Thanks for helping me with my bidding!

[mike777]

I prefer to start with double.

B. If required your style then I bid 2H

[P_Marlowe]

Given that you can bid 1NT, I guess 1NT is not the worst option.
Most would play 15-17, i.e. holding 19 would be way to strong, they would start
with X.

If I made the 1NT overcall, I execute the xfer, assuming 2D was a xfer.
If it was a weak sign off, I pass.

[smerriman]

 P_Marlowe, on 2025-February-14, 08:49, said:

Most would play 15-17, i.e. holding 19 would be way to strong, they would start
with X.

I would say 15-18 is "standard", slightly wider than a 1nt overcall. But including 19 counts seems too much, and this hand is much stronger than 19 anyway, so double either way.

If 2♦ is a transfer, you have to bid 2♥. If you're asking because you feel like this hand is too good to just accept a transfer which will probably be passed, then that's something you decide before bidding 1nt, not after.

[pescetom]

P_Marlowe, on 2025-February-14, 08:49, said:

Given that you can bid 1NT, I guess 1NT is not the worst option.
Most would play 15-17, i.e. holding 19 would be way to strong, they would start
with X.

I would stretch 1NT to 18 or even 19 here (a single stop is enough)... but this hand is too strong for that IMO.
If 2NT is natural but stronger then I'm comfortable bidding 2NT, if it is two-suited then double (followed by NT if partner cannot come up with better).

[steve2005]

shows a double ♣ stopper for what could be a 3-card suit. Wow you must pass a lot.

[Cyberyeti]

What is 1♣ ? 2+/3+/4+ ? Opps weak or strong NT ?

I evaluate this as better than 19 in that you have holdings over the opening bidder in all suits, it will make game opposite a load of 5 and bad 6 counts, so I double

[Swammerdam]

Some of the responses suggest that transfer bids are in common use after a NT overcall. Is this correct?
After 1S-1NT-Pass are 2D and 2H two different ways to show Hearts?
What about Stayman? 2C or cue bid?

[DavidKok]

Swammerdam, on 2025-February-15, 11:38, said:

Some of the responses suggest that transfer bids are in common use after a NT overcall. Is this correct?
After 1S-1NT-Pass are 2D and 2H two different ways to show Hearts?
What about Stayman? 2C or cue bid?

I always play full system on. It does most of what I want and is easy to remember. If you want to make use of the transfer to the opponents' suit (if available), you could treat this as an asking bid for the quality of the stopper.
Recently a friend shared a different structure on (1M)-1NT-(P)-? with me: 2m to play, 2oM to play, 2M inv(+) with 4(+)oM, 2NT inv NF without 4oM. Probably this is better, on frequency grounds. However, it is a rare auction, misunderstandings here are likely irrecoverable, and also having the ability to play in 2m is not that valuable.

[jillybean]

"systems on" after an overcall of nt is common.
Systems are on for the partner of the player making the nt overcall.

(1♠) 1nt (P) 2♦ is a transfer to hearts
(1♠) 1nt (P) 2♥ is a transfer to spades
(1♠) 1nt (P) 2♣ is Stayman

[bluenikki]

DavidKok, on 2025-February-15, 12:05, said:

having the ability to play in 2m is not that valuable.

Why? Because opener can outbid you? Sure, but they can outbid a pass even more easily. And if intervenor fits the minor they can then outbid opener; they can't if you pass.

[Cyberyeti]

jillybean, on 2025-February-15, 12:08, said:

"systems on" after an overcall of nt is common.
Systems are on for the partner of the player making the nt overcall.

(1♠) 1nt (P) 2♦ is a transfer to hearts
(1♠) 1nt (P) 2♥ is a transfer to spades
(1♠) 1nt (P) 2♣ is Stayman

Agree, but what people do with the transfer to opener's suit varies

[pescetom]

Cyberyeti, on 2025-February-15, 12:58, said:

Agree, but what people do with the transfer to opener's suit varies

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[Cyberyeti]

pescetom, on 2025-February-15, 15:37, said:

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What I was trying to say is that (1♦)-1N-(P)-2red is a standard transfer.

(1♠)-1N-(P)-2♦ is a transfer to hearts
(1♠)-1N-(P)-2♥ is used as different things by different people, can be natural, but can be a variety of other things

[smerriman]

Cyberyeti, on 2025-February-15, 16:10, said:

(1♠)-1N-(P)-2♥ is used as different things by different people, can be natural, but can be a variety of other things

And I suspect that what pescetom was trying to say is that a lot of people play it as "does not exist". Which is clearly non-optimal from a theoretical point of view, but easy to remember and perfectly playable.

[jillybean]

Cyberyeti, on 2025-February-15, 16:10, said:

What I was trying to say is that (1♦)-1N-(P)-2red is a standard transfer.

(1♠)-1N-(P)-2♦ is a transfer to hearts
(1♠)-1N-(P)-2♥ is used as different things by different people, can be natural, but can be a variety of other things

I'd like to know. Revealing a psyche perhaps?

[P_Marlowe]

jillybean, on 2025-February-15, 17:24, said:

I'd like to know. Revealing a psyche perhaps?

One option is to play the xfer in their major suit has exactly inv., the other xfer weak or strong.
This is more relevant after w2 openings.

With kind regards
Marlowe

[Cyberyeti]

jillybean, on 2025-February-15, 17:24, said:

I'd like to know. Revealing a psyche perhaps?

If you have a ♠J10987x and out, 2♠ may still be the best spot despite the known 5-0 split, partner is likely to have AK or AQ

[jillybean]

 P_Marlowe, on 2025-February-16, 01:43, said:

One option is to play the xfer in their major suit has exactly inv., the other xfer weak or strong.
This is more relevant after w2 openings.

With kind regards
Marlowe

We have many more options after the opponent's get into the auction. It can be a good thing, as long as you have the methods.

[mikl_plkcc]

I would double first, and bid 1NT if partner responds anything but spades. Then it is system on.