Breaking Jacoby Transfers
#21
Posted 2016-November-24, 07:05
#23
Posted 2016-November-24, 13:26
#24
Posted 2016-November-24, 15:30
aguahombre, on 2016-November-24, 13:26, said:
I don't understand why you are focused on an upgrade to 18 (from 17?) points? The key point is showing partner you have 4 card support and a maximum and letting partner take the next move.
#25
Posted 2016-November-24, 20:31
johnu, on 2016-November-24, 15:30, said:
The whole point of super-accepting, IMO is to get to game on a hand where partner will not be inviting game. If I don't have an upgrade based on the transfer, partner will not have what is necessary for game. Simulate that premise, and I predict it will bear out.
If I super-accept, my partner should get us to game with two Kings or an Ace and a King -- and out. With no further leakage from futile gentle probes, I bet those games will be an overall success at any form of scoring. Those who disagree will continue to super-accept with other hands, will break even when partner has enough to invite game anyway, and I believe will lose out when she doesn't.
Or, I am wrong.
#26
Posted 2016-November-25, 08:59
aguahombre, on 2016-November-24, 20:31, said:
Agreed and with many shapely (6-4) type hands.
As a sidebar an auction of 1nt - 2♦ - 2♥ - 4♥ was originally showing a mild slam try and if you had a super accept (that very few played then) you go slamming. We don't play that anymore, responder was trolling for a super accept and lost their slam ambitions when they didn't get one.
Also, I've NEVER seen a 4x3 worth a super accept.
What is baby oil made of?
#27
Posted 2016-November-25, 14:59
ggwhiz, on 2016-November-25, 08:59, said:
As a sidebar an auction of 1nt - 2♦ - 2♥ - 4♥ was originally showing a mild slam try and if you had a super accept (that very few played then) you go slamming. We don't play that anymore, responder was trolling for a super accept and lost their slam ambitions when they didn't get one.
Also, I've NEVER seen a 4x3 worth a super accept.
1nt p 2h p ?
KT98 AKT AKT T98
#29
Posted 2016-November-25, 15:56
What is baby oil made of?
#30
Posted 2016-November-25, 20:53
ggwhiz, on 2016-November-25, 15:56, said:
Just to clarify, Kaitlyn: We were talking about 15-17 1nt opening bids -- the value of which increase to 18 when Responder transfers to our 4-card suit. With the example hand you gave, it already had a value well above 17, so we could not have that when we have opened 1nt.
#31
Posted 2016-November-25, 21:23
aguahombre, on 2016-November-25, 20:53, said:
I upgrade a 17 HCP 1NT which could have doubleton trump support to a 17 HCP 1NT with 4 card support and break the transfer, even if 4-3-3-3.
#32
Posted 2016-November-26, 11:09
aguahombre, on 2016-November-24, 20:31, said:
ggwhiz, on 2016-November-25, 08:59, said:
Yet if your 1NT open is a 2-point range, so that there are no invitations, it is worth super-accepting on a 4333.
#33
Posted 2016-November-26, 16:44
aguahombre, on 2016-November-24, 20:31, said:
If partner doesn't know that you have a 9+ card trump fit, you won't be in game if partner was planning on passing the transfer.
#34
Posted 2016-November-29, 18:52
fromageGB, on 2016-November-22, 10:27, said:
Not exactly, but actually GIB has a similar concept, bidding the doubleton suit as a transfer break.
#35
Posted 2016-November-29, 20:24
fromageGB, on 2016-November-24, 05:37, said:
[...]
I'd be interested to see some statistics, but it is a common opinion that you need 26hcp for an 8 card fit, with 3 hcp or 1 additional card equating to a trick, so game is 26/8, 23/9, and 23/8 makes 9 tricks etc.
In my home country's official bidding system they count 2 points for the ninth card in trumps. In addition, since you have one card more in trumps, you will have one card less in another suit. This will usually translate into a distributional point for having a doubleton instead of a tripleton, or a singleton instead of a doubleton. So yes, if you don't count shortages separately, the ninth card in trumps is worth 3 points, or 1 full trick in this system. The tenth card, however, gives you only two points in total, maybe a rounding issue. I have never seen the statistical evidence behind this system but I like it and I have often felt that GIB does not attribute enough value to good fits in trumps.
If you are looking for statistical evidence you may want to check this thread by tnevolin who did an extensive statistical study on hand evaluation:
http://www.bridgebas...873#entry890873
particularly the link in post 68
https://drive.google...mlUR2ZUblU/view
and within this document on the last page the link "hand evaluation model"
https://drive.google...jZJcXlfa0k/view
Here every trump card counts only 1 point (page 3) but in addition you get an increasing number of points for shortages if you hold more trump cards (page 4).
Finally in the same thread, post 99 by Jogs with this graph claiming the ninth trump to 4-4 is worth half a trick in a balanced hand or a full trick in a distributional hand:
http://jogsbridge.we.../554030.jpg?617
#37
Posted 2016-November-30, 14:12
m1cha, on 2016-November-29, 18:52, said:
Well, that's simple, but many times responder is going to bid game or otherwise regardless of what you do, so simple is very good at giving away information. Unfortunately you can't avoid it in the transfer suit.