[jillybean]

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Please tell me about transfers over 2nt. Thanks.

[mw64ahw]

4♣ as some Gerber variation or 6N is sufficient over 2N with that run of tricks and hcp count.

[mycroft]

Gerber is uncomfortable - that ♠K could easily be ♠QJ. Frankly, I'd prefer your other option - a "guess right T1" 6NT. But...

Sure you could play transfers here, and they're probably better - but "standard" in my playing areas is "after 2NT 18-19, the only NF call below game is PASS." Yes, it bites you very occasionally (but even then, they frequently have to guess right T1) but here, 3♥ is both standout and simple - provided partner won't pass it!

[DavidKok]

Transfers over 2NT, Wolff and 'everything forces game' are all fine but not amazing. Pick your favourite. The transfers are a little bit better, I think. You can overload the transfer to 3♦ with some artificiality, especially in a Walsh context.

Personally I think that all these solutions come one round too late. I want to tell partner I have a garbage hand with a suit before they jump to 2NT, and before fourth seat interferes. My beloved Dutch Doubleton handles the rest automatically, but even without that simple weak jump shifts reduce the problem by so much that I think you'll be fine without a gadget here.

[mw64ahw]

mycroft, on 2026-August-03, 09:35, said:

'that ♠K could easily be ♠QJ'

The probability of two uncontrolled suits in an 18-19 balanced hand is sub 1%.

[mikeh]

Assume 1x 1M 2N, uncontested, just because it makes it simpler to describe. But there is zero difference if there has been competition so long as opener’s last bid was a strength showing natural 2N and his LHO has passed.

3C is a transfer to diamonds, regardless of what opener bid at the one level. It is mandatory because responder could be about to pass. Note I’m assuming some form of Walsh whereby one responds to 1C by bidding the major with weak hands with a 4 card major and longer diamonds.

If responder bids over 3D, it’s gf and bidding is natural, with responder having shown diamonds plus the major in which he responded.

3D is a transfer to hearts

If responder bid 1H, then the 3D transfer is mandatory…responder could be about to pass. If he bids anything else, it’s gf

If over 3H, responder bids 3S, that’s a 4 card spade suit and 5+ hearts, gf. With 4=4 majors, bid 3H, transferring to spades.

Now after 1m 1S 2N 3D:

Opener only bids 3H with 4. With 2 or 3, he bids 3S with 3 and otherwise 3N. In this auction, responder can transfer again over 3N. So 1C 1S 2N 3D 3N 4D is 5=5 or better in the majors, unlimited

After a 1H response, 3H by responder, over 2N, shows 4=4 majors. Opener bids 3S with 4 and 3N otherwise (there are variants but I’ll keep it simple)

After a 1S response, 3H forces 3S, since responder may be passing

3S over 2N shows clubs with some reason for not bidding 3N. Opener assumes responder has a 4 card major and some interest in a club slam. Opener usually bids 3N but can go past 3N with a hand that is slam suitable within the context of the auction

It may sound complicated but it really isn’t.

Transfers to diamonds or responder’s major are mandatory because responder may by trying to get out.

Transfers to a new major are accepted only with 4 card support.