Superacceptance

[jerome keslin]

For those of you who use Jacoby transfers:

1. Do you superaccept with  4 trumps?

2. If you do, which bids do you use.

Thanks, 

Jerome

[Ronald Kalf]

First question: are you talking about 1N or 2N? 
If 1N I cannot help because I‘m somewhat of a traditionalist and don’t play transfers here.

If 2N I reccomend to always superaccept with a fit even if only a 3crd. 

Simulations have shown that this is a sound policy.

As a consequence Responder should pass (a 21-22) 2N with 0-3 hcp and a bad suit

Bottom line this is a winning strategy.

[jerome keslin]

I was referring to transfers after a weak nt opening. I am aware that it's not part of KS but wondered if the group thought it was risky to use them when responder could be very weak.

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[Dave Jones]

During the 1970s and 80s I wrote to Kaplan about the pros and cons of transfers; as I played with a transfer fanatic. 

Kaplan’s response:

“The ‘pro’ is extra room for offensive sequences, particularly for two suitors.

“The ‘con’ is extra room for the enemy on your weak sequences—I went to bid two spades, not two hearts when I am weak.”

I agree with Kaplan. Moreover, I want to bid 2♦️ before the opponents double, not 2♣️ after. That is particularly important holding, for example, 

1-3-4-5 with ♦️Qxxx and ♣️Jxxxx, a top seared into my memory.

Most importantly, having the 14 HCP hand concealed while exposing the 19 HCP hand on a thin slam does not seem terribly advantageous. 

I don’t see a lot of value in having the 13 HCP hand concealed and the 9 HCP exposed at 2♠️. 

At game in a major, having the balanced hand exposed seems slightly better than the hand with five of the major.

Dave Jones

[Otis Bricker]

Another point in favor of not using transfers over WNT is that it hides the less well defined hand to the defense. 

Opener is known to have 12-14 and a balanced hand. Responders bid of 2H(or a 2D Transfer) could be anything from 0 to a bad 11 and almost any shape. If opener plays 2H after a transfer, the defenders know each other’s rough HCP to within 2 points and has an easier time working out the shape. 

This can often provide an extra trick in the much more common situation where you are signing off.



I had come up with a system of transfers to use after a SNT rebid by opener.  But decided it was more complicated that my partner at the time was comfortable with. Simple does have an advantage sometimes when you are not playing constantly.  

Otis

On Dec 21, 2024, at 4:49 PM, 'Dave Jones' via The Kaplan-Sheinwold Bidding System <kaplan-s...@googlegroups.com> wrote:



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[Alex Martelli]

When I played with late, much-missed K&S Australian fan Dave Morgan (in the winter 2007 ACBL Nationals in SF, and before that online on OKBridge), I supplied him with a lot of statistics and he designed a response system to 1N according to them. It's part of the agreements (slight variations from KSU) we played and called M&M (Morgan and Martelli). You can see the complete system notes at https://docs.google.com/document/d/1o_9ZPcYeIo4MErPBrZLQQ_3ID8zi_xDucJqAAlStPwA/edit?usp=sharing .

Summarizing, 2C Stayman, 2H and 2S and 3C and 3D natural sign-offs, 2D invitational or better with 5+ hearts, 2N GF with 5+ spades. INV hands  with spades must go via 2N. INV hands w/o majors MAY go through 2C, or, preferably, just guess between pass and 3N (my statistics suggest the 2nd approach is best. That 2007 National is what made me enroll in the ACBL, and the first (and only!) time I ever got Platinum MPs;-)

Alex

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[jerome keslin]

Thanks for helpful replies regarding why one shouldn't use transfers after the WNT.
However I wanted to know that if anyone did play transfers, did they also
use superaccepts.

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[Christopher Monsour]

Just 3M.  I consider descriptive superaccepts more helpful to the opponents (because they reveal the closed hand) and I'd probably get in trouble for psyching them frequently if I used them.

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From: kaplan-s...@googlegroups.com <kaplan-s...@googlegroups.com> on behalf of jerome keslin <jet...@gmail.com>
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Subject: Re: Superacceptance

 

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[Christopher Monsour]

Amending this slightly, it's even better to use the step above 2M as the only superaccept, so that responder can describe if he has an Invite in context.  But then you have to agree whether the bid below 3M is descriptive or a re-transfer.

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Sent: Sunday, December 22, 2024 7:44:43 AM

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[fred Curtis]

Yes, but only superaccept is step +1,

Responder can retransfer to sign off in 3M

 Or make a transfer shortsuit try ostensibly for game but maybe slam

Or bid game from own side

Or make a 4 level bid in a new suit as wild 2 suited to focus on that suit for slam purposes 

Or kickback in agreed M  probably protecting tenaces as otherwise retranfer and kickback)

Works well if prepared to accept additional complexity IMHO

FRED CURTIS

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On 22 Dec 2024, at 7:06 pm, jerome keslin <jet...@gmail.com> wrote:



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[Steve Willner]

On 2024-12-22 8:08 AM, Christopher Monsour wrote:
> it's even better to use the step above 2M as the only superaccept, so
> that responder can describe if he has an Invite in context.  But then
> you have to agree whether the bid below 3M is descriptive or a re-transfer.

Is that really better? Compared to 3M, 2M+1 makes the "game or
part-score" decision more accurate and lets the contract be played from
either side, but it gives the opponents more ways to enter the auction
when responder is weak.

Regardless of methods, it seems Christopher and I agree that it's a bad
idea to describe opener's hand when super-accepting. That applies only
to weak NT; when superaccepting with a strong NT, I'm happy to use
anti-splinters as David Morgan suggested.

To answer the original question, I don't play transfers with a weak NT,
but I'm willing to raise 2M to 3M with a near-max and 4c support.
_When_ to do that depends on multiple factors, not least my judgment of
the opponents. I don't think I'd often or maybe ever raise 2D to 3D,
but I seldom play 2D as natural. (My preferred use is invitational or
better with a 5cM, but that's complex. With most partners, I've played
2D as an artificial GF. That restores much of the bidding space you
lose by not playing transfers.)

[Adam Wildavsky]

Doug and I do as Fred does. Transfers are Doug’s preference, and I don’t feel strongly enough about it to ask him not to play them. 

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