[Phil]

 MrAce, on 2017-April-03, 21:41, said:

So I was right!
Pd did not have a weird NT opening that decided to lift your value redouble, which has no max limit by the way.
I did not buy the arguments made by Arend or others about that.
I figured by experience that pd misunderstood my xx. And I did not come to this conclusion via UI and/or alert by pd.

Timo, I still don't know what call you would take after partners 2C.

[MrAce]

 Phil, on 2017-April-03, 22:05, said:

Timo, I still don't know what call you would take after partners 2C.

I am definitely not passing, probably 3 ♣.
I do not need UI to take caution. I do not buy that pd psyched 1 NT at first seat.

There are 2 options left which are far more likely than pd having psyched.

-He opened a weird NT with long clubs
-He forgot the meaning of xx.

In both cases I am raising clubs. If he forgot the meaning of xx, raising clubs may not help but I can't do everything for him.
But note that I am answering your OP in which I have no UI (wrong alert was not mentioned)
In the case of hearing his wrong explanation, I have to consider whether pass is a LA or not for my own level. But I would probably pass because that saves me from arguing my logic with the TDs.

[lamford]

 MrAce, on 2017-March-31, 23:23, said:

This auction does not make sense to meIf redouble showed values and pd did not pass my redouble, it means he misunderstood my redouble. I do not need an UI to figure this, assuming that I am playing with someone sane.

Yes you do need UI, as partner opening 1NT with a weak two in clubs is the normal interpretation. You should alert 2C as a hand that would have passed Stayman, which is the normal psyche control here.

[MrAce]

 lamford, on 2017-April-04, 11:31, said:

Yes you do need UI, as partner opening 1NT with a weak two in clubs is the normal interpretation. You should alert 2C as a hand that would have passed Stayman, which is the normal psyche control here.

Why pd opening 1 NT with a weak 2♣ is normal interpretation? I have never seen anyone opening 1 NT with a weak 2 ♣ at first seat, and this is the first time I am hearing about it and now it is normal interpretation?
And as you witnessed in this topic, I did not have an UI and still got it right without the UI.

[mycroft]

1NT-2♣;
4♠-p.

What's 4♠? "I think partner just noticed his clubs are also spades."

Having said that, I, having never seen nor perpetrated the one in the OP, would expect 6 clubs and bad majors. Promised 12-14 optional.

[Phil]

I just don't buy that 2C reveals a hand that psyched a 1N opening. The purpose of a xx, much like a penalty x of 1N, isn't to penalise the opponents (although it frequently happens) as much as a general expression of strength. I would expect the 2C bidder has something like AQx xx Qx KQTxxx.

A hand that is truly headhunting over the artificial x can pass and double.

[Jinksy]

 Phil, on 2017-April-04, 14:40, said:

A hand that is truly headhunting over the artificial x can pass and double.

Really? To me that looks like a competitive takeout double as opposed to one which P might strongly consider passing.

[Phil]

 Jinksy, on 2017-April-04, 15:05, said:

Really? To me that looks like a competitive takeout double as opposed to one which P might strongly consider passing.

depends how you play, but Ive had a lot of luck with this method. Double (or in this case xx and x) and double is more cooperative. Pass and double is don't pull....ever. If I want to compete, I can bid something.