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Jacoby 2NT 2/1 ACBL

#21 User is offline   miamijd 

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Posted 2020-September-01, 08:30

View Postcrapdown4, on 2020-August-31, 15:52, said:

OK, first of all, there is no "right" bid on this hand. It's too good for 4S and too weak for Jacoby 2NT. If you cook up some kind of temporizing bid like 2C, then fourth hand might preempt you out of your shorts and you'll never be able to show how strong your spades are.

Because there is definitely a danger of preemptive action by fourth hand--he's short in spades, after all, and if pard has a minimum he might have considerable strength--I vote for the least lie--4S.


First, stop worrying about what the opponents are going to do. The first one didn't overcall; the second one will need to bid over a 2NT call; you have the master suit, and you are going to bid to 4S no matter what they do.

Second, a temporzing bid is silly with this hand. It will give partner an absolutely wrong idea of what you have.

Finally, the trouble with 4S comes when partner has a good hand. What if he has:

Kxxxx A Axx AJxx

You will play an easy grand in 4S.

There isn't a lot of risk in bidding 2NT. You will then show a minimum at every opportunity. Your partner isn't going to go hog-wild unless he has a rock-crusher.

This ties in with Jeff Meckstroth's advice to me some 35 years ago: at your first turn, when faced with having to overbid slightly or underbid slightly, always choose the overbid. It's easy enough to slow things down later on. It's NOT easy to speed them up. (Of course, it helps when you can play them like Jeff does :).

Cheers,
Mike
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#22 User is offline   FelicityR 

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Posted 2020-September-01, 09:33

4 is a LUDICROUS bid because it is 95% of the time a stop bid.

If you were opening the bidding instead of partner with 1, your partner would be bidding 2NT here, n'est-ce pas?

Both Cyberyeti and Mike (miamijd) are right. Bid 2NT and then put the brakes on. Why have Jacoby 2NT as a convention and then not use it?

In my humble opinion, there is nothing more to discuss on this thread :)
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#23 User is offline   hrothgar 

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Posted 2020-September-01, 09:54

FWIW, I threw together a quick dealer script

You can run this on http://dealergib1.br...ler/dealer.php.

Even if you're playing relatively weak openings, this hand is making 4S+ 71% of the time

I ran a variant of the same script in which N/S is constrained to make 9 or fewer tricks in Spades and checked how many tricks E/W would expect to score in hearts if this were their longest fit. Their scoring 10+ tricks close to half the time



predeal south SAJT862,HJ97,D62,CKQ

opening_strength =

hcp(north) >= 11
and cccc(north) >= 1050

one_spade =

spades(north) >= 5 and
hearts(north) <= spades(north)

and

not

(
shape(north, any 5332) and
hcp(north) >= 14 and
hcp(north) <= 16
)

and not

(
shape(north, any 5332) and
hcp(north) >= 19
)



produce 500

condition one_spade and
opening_strength and
hearts(east) + hearts(west) >= clubs(east) + clubs(west) and
hearts(east) + hearts(west) >= diamonds(east) + diamonds(west) and
tricks(north, spades) < 10

action

# print(north,south)

#frequency "Spades" (tricks (north, spades), 0, 13)

frequency "Hearts" (tricks (east, hearts), 0, 13)
Alderaan delenda est
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#24 User is offline   doccdl 

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Posted 2020-September-01, 14:54

With a regular partner it is 2NT and with a strange unknown partners it is 4.
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#25 User is offline   Zelandakh 

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Posted 2020-September-02, 09:36

View Postmiamijd, on 2020-September-01, 08:30, said:

This ties in with Jeff Meckstroth's advice to me some 35 years ago: at your first turn, when faced with having to overbid slightly or underbid slightly, always choose the overbid. It's easy enough to slow things down later on. It's NOT easy to speed them up. (Of course, it helps when you can play them like Jeff does :).

I am a little interested as to the context of JM's comment here. My experience is that this is only true when we have a fit and that for hands without a fit it is often a good idea to be cautious until a fit is found and then to make an energetic bid to show the fit. On this hand I am kind of shocked that so many seem to see a GF raise as an overbid. Switch the spades and the diamonds though and I am intrigued if you would now suggest the overbid of a GF 2 response. I could be wrong but I suggest not; which rather proves the point that most posters only pull out these tips when they match what they want to do anyway, such as the classic "I follow Hamman's advice and bid 3NT". It does not matter whether BH himself would have made that call, nor in this case whether JM would have bid 2NT/2, only that it provides additional justification for the poster's personal position. Curiously, in a RM Precision context, a 4 response would make much more sense than for 2 over 1 due to the limited openings. Are you 100% sure what JM would call if ER had opened 1?
(-: Zel :-)

Happy New Year everyone!
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#26 User is offline   mikeh 

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Posted 2020-September-02, 16:51

What one does is (for me) dependent on my methods.

If playing that a 3S bid is a limit raise, I’d bid 2N. The problem is, then, that any pair playing 3S as the limit raise probably plays a very basic 2N structure. Since J2N may overly excite partner, I’m not happy with that choice. However, no way am I not going to game, and a jump to 4S, except in a big club method, is silly.

My preference would be to be playing bergen. I’d show a 4 card limit raise And then bid game over a sign off.

One needs to be a little worried about partner’s tempo. Were he to hesitate and Then sign off, your opps might be annoyed when you go onto game, but you have to carry throuGh with this plan, since otherwise you are letting partner’s tempo influence your bidding. Note that you may then have to live with a ruling.

An alternative would be, if available, to bid a forcing 1N then 4S. Such is more likely to avoid opposition upset, since (firstly) 1N is so weird with six card support that the opps should believe that you were always bidding game and (secondly) partner’s hypothetical break in tempo won’t be as clearly suggestive as would be a hesitation over Bergen, followed by 3S.

However, I prefer Bergen because partner may have a good hand, with slam possibilities, and such will be far easier to bid after you show 4+ support than if you bid 1N. Also 1N makes it easier for the opps to get into the auction.
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#27 User is offline   sfi 

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Posted 2020-September-02, 17:51

View Postmikeh, on 2020-September-02, 16:51, said:

One needs to be a little worried about partner’s tempo. Were he to hesitate and Then sign off, your opps might be annoyed when you go onto game, but you have to carry throuGh with this plan, since otherwise you are letting partner’s tempo influence your bidding. Note that you may then have to live with a ruling.

The problem is that the laws actually require you to be influenced by partner's tempo in these situations. It contains a stronger restriction than simply ignoring it, so it's pretty hard to avoid an adjustment if partner does break tempo.

As someone who directs and sits on appeals committees (or did until we moved away from them), I would suggest you include this tendency in your notes. Even better, I would add wording that describes the types of hands you would do it with. E.g., "flattish seven loser hands with good trumps and soft values," or whatever. Maybe even an example or two. Documentary evidence would go a long way to protecting you.
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#28 User is offline   mikeh 

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Posted 2020-September-02, 19:31

View Postsfi, on 2020-September-02, 17:51, said:

The problem is that the laws actually require you to be influenced by partner's tempo in these situations. It contains a stronger restriction than simply ignoring it, so it's pretty hard to avoid an adjustment if partner does break tempo.

As someone who directs and sits on appeals committees (or did until we moved away from them), I would suggest you include this tendency in your notes. Even better, I would add wording that describes the types of hands you would do it with. E.g., "flattish seven loser hands with good trumps and soft values," or whatever. Maybe even an example or two. Documentary evidence would go a long way to protecting you.

I also used to sit on appeals back in the day. I have no issue with having to accept a ruling, if need be. I expressly said so in my post. Personally, I will never consciously allow partner’s tempo to affect my bid. Say I made a Bergen limit raise, and partner hesitated then signed off. I know I was going to game. Say I allowed the hesitation to influence me into passing 3S, and that was all we could make. I would feel awful about that. I’d feel much happier bidding 4S and hoping that the TD or, more l8keky, the opps would accept that I was acting ethically. If they call, and the TD ruled against me, then so be it. Unhappy as I would be, I’d feel a lot better than in the scenario where I passed 3S due to the hesitation and saw partner held to 9 tricks

I understand the opposite point of view and would not accuse those who hold to it of doing anything wrong. It’s just not something I could bring myself to do.

Obviously this ONLY applies in those very rare situations where I have intentionally set out on an unusual sequence. Another, for me, fairly common (tho that is a relative term) situation is a balance 13 count with 4 card support for partner’s major. Since I like J2N to carry mild (very mild) slam interest I will occasionally bid a forcing 1N then bid game.

The good news, for me, is that both my current serious partners almost always take the aggressive route when confronted with a close decision, probably because our style is very much imp oriented so
I’m rarely in the awkward situation I describe
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari
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#29 User is online   smerriman 

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Posted 2020-September-02, 20:03

View Postsfi, on 2020-September-02, 17:51, said:

It contains a stronger restriction than simply ignoring it, so it's pretty hard to avoid an adjustment if partner does break tempo.

Would a poll really find enough players giving serious consideration to passing this out in 3?
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#30 User is offline   sfi 

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Posted 2020-September-02, 20:09

View Postmikeh, on 2020-September-02, 19:31, said:

I also used to sit on appeals back in the day. I have no issue with having to accept a ruling, if need be. I expressly said so in my post. Personally, I will never consciously allow partner’s tempo to affect my bid.

I'm not really trying to change your mind, since I know you understand the laws. But I do think it's worth pointing out the subtle but important distinction between what you are saying and what the laws actually require, for others who may be reading.

To quote Law 16B:

Quote

(a) A player may not choose a call or play that is demonstrably suggested over another by unauthorized information if the other call or play is a logical alternative.


We have the agreed hesitation that provides UI. As a director, I need to be satisfied the action either was not "demonstrably suggested" by the UI or there was not another logical alternative that was not suggested. Otherwise we're looking at adjusting the board.

As a player, I need to consider that as well. Sometimes that's easy to work out - partner hesitated over a cue bid so now I need to have a really clear reason to lead that suit. Sometimes it's not, and the situation you are talking about is one where it can easily appear to be controversial. My suggestion about editing notes is basically designed to provide evidence that the other option (passing 3M here) is not a logical alternative.

And then there are the times when the UI actually impacts the decision. For example, you have a hand that might or might not invite in the auction 1S - 2S. If partner's 2S bid was slow, I suggest it is clear partner was deciding whether or not to invite. Now you are required by 16B to choose the alternative not suggested by the UI, so you are obligated to not invite even if you think most of the time you would have.

So it's not as simple as just ignoring the UI altogether. And it even makes sense to not do so from the point of view of the score. If you get to 4S and it makes, you're not keeping your score. But if it goes down you are, so there's no upside in inviting (under these conditions and assumptions). Basically the UI means you can no longer take inspired views in close decisions.

(You might disagree with my specific example. Even so, I'm sure you can come up with another one that fits the point.)
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#31 User is offline   sfi 

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Posted 2020-September-02, 20:20

View Postsmerriman, on 2020-September-02, 20:03, said:

Would a poll really find enough players giving serious consideration to passing this out in 3?

Probably not in this case. But to conduct a poll you would need to find people who would choose the invitational bid in the first place - everyone who would simply game force or jump to game should be immediately excluded. When you find those people you have to ask what they would do when partner signs off. Remember, the choice of invitational action is an indication that you actually meant it as invitational.

Now you're in a range of murky outcomes. The director may find some people who simply aren't good at hand evaluation. You then have to raise the point that they aren't your peers, so the poll is invalid. Or that this is your style, which is where documentary evidence helps. The people judging the top players are almost certainly not as good as the players. Now we have reviews rather than appeals committees, the only ways to get views of top players are polling or for the director to consult directly. So there is less ability to have top-level considerations brought to the table.

And directors will far more frequently hear this argument from someone who actually was influenced by partner's hesitation. It happens all the time, and you don't want to rely on standing out from the crowd when you don't have to.
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#32 User is offline   mycroft 

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Posted 2020-September-03, 11:29

Remember that for it to matter, there has to be a (less successful) LA to the UI.

Showing "10-12, 4c support" and having 11 with *6* card support but no shortness, find someone who won't say "oh, I'm not passing 3". Even if it takes 40 seconds to reject the invite. Sure, acknowledge the hesitation, bid 4 anyway, if they call the TD fine, if they wait until dummy comes down and then calls the TD, fine (but I'd be surprised).

Now, where the border is where partner's hesitation is going to hang you certainly exists. AJ862 J97 T62 KQ is much closer, for instance, and you might find someone who won't go to game. And then, if you still truly believe this is an absolute game force that you have to "fake" to stop partner from getting too excited, and it turns out that partner is really not too excited, you bid it, and if it turns out that your peers disagree about alternatives, you accept the ruling and go on.

"flat game forces on shape" are hard in natural systems. You want the 19s to look for slam, but not be at the 5 level with the 15s. I've seen "1-1NT(F); x-4", I've seen "1-3NT" showing something like that (my agreement with that is more AJ8xx xx Axx xxx, but I might fake it with this hand), I've seen "Bergen raise and jump to game" (here and elsewhere), there will be many others.
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#33 User is offline   kgr 

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Posted 2020-September-04, 10:23

Yes, good enough for 2nt
No, too good for 4S
No, I don't consider other bids
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