BBO Discussion Forums: majors - BBO Discussion Forums

Jump to content

  • 2 Pages +
  • 1
  • 2
  • You cannot start a new topic
  • You cannot reply to this topic

majors

#1 User is offline   hanp 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,987
  • Joined: 2009-February-15

Posted 2010-March-02, 05:30

J10xxx
AQ109x
Q
Ax

IMPs, red against white:

(2S) - p - (3S) - ??

2S showed exactly 5 spades and a 4+ minor.
and the result can be plotted on a graph.
0

#2 User is offline   kfay 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,208
  • Joined: 2007-July-01
  • Gender:Male
  • Location:Michigan
  • Interests:Science, Sports

Posted 2010-March-02, 05:44

Give partner some hearts and....

I can't do it, I just pass.
Kevin Fay
0

#3 User is offline   gwnn 

  • Csaba the Hutt
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 13,027
  • Joined: 2006-June-16
  • Gender:Male
  • Interests:bye

Posted 2010-March-02, 05:47

pass. We need a huge fit from GOP to make anything.
... and I can prove it with my usual, flawless logic.
      George Carlin
0

#4 User is offline   hrothgar 

  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 15,724
  • Joined: 2003-February-13
  • Gender:Male
  • Location:Natick, MA
  • Interests:Travel
    Cooking
    Brewing
    Hiking

Posted 2010-March-02, 06:25

Call me crazy, but I am bidding 4

Partner has a spade void. He is almost guaranteed heart length.

True, partner has a Spade void AND he couldn't find a call over 2 in direct seat. This certainly limits his strength. Partner rates to have at least a seven count and all these points are going to be working.

My biggest worry is that partner is going to table a 10 count and is going to bid on over 4. Its entirely possible that 5 is going to go down but 4 would make.

Interesting hand
Alderaan delenda est
0

#5 User is offline   Codo 

  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,373
  • Joined: 2003-March-15
  • Location:Hamburg, Germany
  • Interests:games and sports, esp. bridge,chess and (beach-)volleyball

Posted 2010-March-02, 06:45

I try to think about hand that makes 4 Heart and I fail if partner does not hold at least 4 Hearts. So I pass. Maybe partner is not too weak to x 3.
Kind Regards

Roland


Sanity Check: Failure (Fluffy)
More system is not the answer...
0

#6 User is offline   gnasher 

  • Andy Bowles
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 11,993
  • Joined: 2007-May-03
  • Gender:Male
  • Location:London, UK

Posted 2010-March-02, 07:10

I'd bid 4. Maybe they'll lead a spade.
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
0

#7 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2010-March-02, 07:27

I'd pass, partner might reopen agressively, but then I am not sure Iam passing it...
0

#8 User is offline   kgr 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 3,455
  • Joined: 2003-April-11

Posted 2010-March-02, 07:58

Pass and if partner reopens with DBL: Pass again
0

#9 User is offline   Apollo81 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 3,162
  • Joined: 2006-July-10
  • Gender:Male
  • Location:Maryland

Posted 2010-March-02, 08:24

Pass. 4 if partner reopens with a double.
0

#10 User is offline   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 15,228
  • Joined: 2009-July-13
  • Location:England

Posted 2010-March-02, 08:46

I've got partner tabbed with a hand he would have bid 2N unusual over 1S, but can't bid over 2S.

How well is this going to play opposite say:

VOID, xx, KJxxxx, KQxxx

compared to the guaranteed penalty out of 3S.

The problem is that pard might be about to bid 3N over 3S.
0

#11 User is offline   hrothgar 

  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 15,724
  • Joined: 2003-February-13
  • Gender:Male
  • Location:Natick, MA
  • Interests:Travel
    Cooking
    Brewing
    Hiking

Posted 2010-March-02, 09:12

Cyberyeti, on Mar 2 2010, 05:46 PM, said:

I've got partner tabbed with a hand he would have bid 2N unusual over 1S, but can't bid over 2S.

How well is this going to play opposite say:

VOID, xx, KJxxxx, KQxxx

compared to the guaranteed penalty out of 3S.

The problem is that pard might be about to bid 3N over 3S.

LHO is promising a 4+ card minor

Me thinks this will have an impact on partner's expected heart length....
Alderaan delenda est
0

#12 User is offline   pooltuna 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 3,814
  • Joined: 2009-July-23
  • Gender:Male
  • Location:New Orleans

Posted 2010-March-02, 09:52

hanp, on Mar 2 2010, 06:30 AM, said:

J10xxx
AQ109x
Q
Ax

IMPs, red against white:

(2S) - p - (3S) - ??

2S showed exactly 5 spades and a 4+ minor.

pass seems clear
"Tell me of your home world, Usul"
the Freman, Chani from the move "Dune"

"I learned long ago, never to wrestle with a pig. You get dirty, and besides, the pig likes it."

George Bernard Shaw
0

#13 User is offline   Cascade 

  • PipPipPipPipPipPipPipPip
  • Group: Yellows
  • Posts: 6,772
  • Joined: 2003-July-22
  • Gender:Male
  • Location:New Zealand
  • Interests:Juggling, Unicycling

Posted 2010-March-02, 13:13

hrothgar, on Mar 3 2010, 04:12 AM, said:

Cyberyeti, on Mar 2 2010, 05:46 PM, said:

I've got partner tabbed with a hand he would have bid 2N unusual over 1S, but can't bid over 2S.

How well is this going to play opposite say:

VOID, xx, KJxxxx, KQxxx

compared to the guaranteed penalty out of 3S.

The problem is that pard might be about to bid 3N over 3S.

LHO is promising a 4+ card minor

Me thinks this will have an impact on partner's expected heart length....

I did a simulation with one player having five spades and a four or more card minor and the other having a spade raise partner's heart length frequencies were:

    0        224
    1       2960
    2      13379
    3      28721
    4      31413
    5      17646
    6       5069
    7        560
    8         28


Average 3.64

If I further insisted that the raiser had a shortage these became:

    0        524
    1       4231
    2      11902
    3      16593
    4      21052
    5      26345
    6      16234
    7       3009
    8        110


average 4.13

The real distribution is probably somewhere between these two.
Wayne Burrows

I believe that the USA currently hold only the World Championship For People Who Still Bid Like Your Auntie Gladys - dburn
dunno how to play 4 card majors - JLOGIC
True but I know Standard American and what better reason could I have for playing Precision? - Hideous Hog
Bidding is an estimation of probabilities SJ Simon

#14 User is offline   jdonn 

  • - - T98765432 AQT8
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 15,085
  • Joined: 2005-June-23
  • Gender:Male
  • Location:Las Vegas, NV

Posted 2010-March-02, 13:19

Wayne does that take into account that in this case we have 5 hearts?

Maybe I'm being simplistic (or wrong somehow), but if a bid simply promises 5 spades then the player averages 2.67 in each other suit. So the presence of a 4 card minor lowers his expectation in each other suit (hearts and the other minor) by (4-2.67)/2 = .67, which increases that expected length in each other hand by .22. That doesn't seem like very much to me. I probably underestimated since it's a 4+ minor but overall I don't think it makes a big difference.

All that being said I pass here. partner can bid his own hand (which will include aggressive balancing here with his spade void) and he won't thank me for guessing for him if I bid 4 and he has the minors.
Please let me know about any questions or interest or bug reports about GIB.
0

#15 User is offline   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 15,228
  • Joined: 2009-July-13
  • Location:England

Posted 2010-March-02, 13:44

hrothgar, on Mar 2 2010, 10:12 AM, said:

Cyberyeti, on Mar 2 2010, 05:46 PM, said:

I've got partner tabbed with a hand he would have bid 2N unusual over 1S, but can't bid over 2S.

How well is this going to play opposite say:

VOID, xx, KJxxxx, KQxxx

compared to the guaranteed penalty out of 3S.

The problem is that pard might be about to bid 3N over 3S.

LHO is promising a 4+ card minor

Me thinks this will have an impact on partner's expected heart length....

Yes but similarly his pard has just bid 3 spades and not enquired which minor, so that has an impact on how many minor suit cards (and hence how many hearts) he holds.
0

#16 User is offline   Cascade 

  • PipPipPipPipPipPipPipPip
  • Group: Yellows
  • Posts: 6,772
  • Joined: 2003-July-22
  • Gender:Male
  • Location:New Zealand
  • Interests:Juggling, Unicycling

Posted 2010-March-02, 14:14

jdonn, on Mar 3 2010, 08:19 AM, said:

Wayne does that take into account that in this case we have 5 hearts?

Maybe I'm being simplistic (or wrong somehow), but if a bid simply promises 5 spades then the player averages 2.67 in each other suit. So the presence of a 4 card minor lowers his expectation in each other suit (hearts and the other minor) by (4-2.67)/2 = .67, which increases that expected length in each other hand by .22. That doesn't seem like very much to me. I probably underestimated since it's a 4+ minor but overall I don't think it makes a big difference.

All that being said I pass here. partner can bid his own hand (which will include aggressive balancing here with his spade void) and he won't thank me for guessing for him if I bid 4 and he has the minors.

That is what I tried to do.

I predealt the actual hand from this thread.

predeal north SJT432, HAQT92, DQ, CA2


and then used the following simple constraint

spades(east)==5 and
(diamonds(east)>=4 or clubs(east)>=4) and
spades(west)==3 and
(hearts(west)<2 or diamonds(west)<2 or clubs(west)<2)


with and without the last condition.

I did not constrain HCP which would have a minor impact on the numbers.
Wayne Burrows

I believe that the USA currently hold only the World Championship For People Who Still Bid Like Your Auntie Gladys - dburn
dunno how to play 4 card majors - JLOGIC
True but I know Standard American and what better reason could I have for playing Precision? - Hideous Hog
Bidding is an estimation of probabilities SJ Simon

#17 User is offline   OleBerg 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,950
  • Joined: 2008-April-05
  • Gender:Male
  • Location:Copenhagen
  • Interests:Model-Railways.

Posted 2010-March-02, 14:23

Cyberyeti, on Mar 2 2010, 09:44 PM, said:

Yes but similarly his pard has just bid 3 spades and not enquired which minor, so that has an impact on how many minor suit cards (and hence how many hearts) he holds.

A raise to 3 on a 3-card suit, could very well indicate some kind of fit for both minors, on a hand that simply want to take up bidding space.

That might not be the case, but implying that it should indicate long hearts, seems far-fetched to me.

So maybe the only difference bidding 4 makes, is who is going to declare. Playing with myself, I would definitely bid 4, as I don't want me to declare.
_____________________________________

Do not underestimate the power of the dark side. Or the ninth trumph.

Best Regards Ole Berg

_____________________________________

We should always assume 2/1 unless otherwise stated, because:

- If the original poster didn't bother to state his system, that means that he thinks it's obvious what he's playing. The only people who think this are 2/1 players.


Gnasher
0

#18 User is offline   Cascade 

  • PipPipPipPipPipPipPipPip
  • Group: Yellows
  • Posts: 6,772
  • Joined: 2003-July-22
  • Gender:Male
  • Location:New Zealand
  • Interests:Juggling, Unicycling

Posted 2010-March-02, 14:32

There are certainly some hands where you would raise 2 to 3 with only three spades because you have short hearts. Reasoning that it will be too easy for the opponents to come in over 2.

Of course these are not the only hands you will raise with .
Wayne Burrows

I believe that the USA currently hold only the World Championship For People Who Still Bid Like Your Auntie Gladys - dburn
dunno how to play 4 card majors - JLOGIC
True but I know Standard American and what better reason could I have for playing Precision? - Hideous Hog
Bidding is an estimation of probabilities SJ Simon

#19 User is offline   hanp 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,987
  • Joined: 2009-February-15

Posted 2010-March-02, 15:04

I passed and partner had - Jxxx KJ10xx KQxx and passed it out. So that was +50 instead of 650. Further thoughts?

The actual west had AQx xx AJxxx xxx Wayne. That wouldn't pass your constraints but doesn't seem unreasonable white against red.
and the result can be plotted on a graph.
0

#20 User is offline   PhantomSac 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,488
  • Joined: 2006-March-23
  • Gender:Male

Posted 2010-March-02, 15:05

hanp, on Mar 2 2010, 04:04 PM, said:

I passed and partner had - Jxxx KJ10xx KQxx and passed it out. So that was +50 instead of 650. Further thoughts?

The actual west had AQx xx AJxxx xxx Wayne. That wouldn't pass your constraints but doesn't seem unreasonable white against red.

Pass then pass is absurdddddddd (Xing 2S is obvvvvvvvvvvvvvvvvvvvv)
The artist formerly known as jlall
0

  • 2 Pages +
  • 1
  • 2
  • You cannot start a new topic
  • You cannot reply to this topic

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users