BBO Discussion Forums: Is 2 diamonds forcing? - BBO Discussion Forums

Jump to content

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

Is 2 diamonds forcing?

#1 User is offline   dickiegera 

  • PipPipPipPipPip
  • Group: Full Members
  • Posts: 568
  • Joined: 2009-July-12
  • Gender:Male
  • Location:Ohio

Posted 2010-July-07, 17:47

Bidding goes:

1 -P- 1-2
x* - P - 2 - P
?

*support double

Is 2 Forcing?
Thank you
0

#2 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-July-07, 17:59

No, but this is the type of follow up auction that it's very good to discuss before playing support doubles. As good as I think they are, they are probably the convention of which people are most guilty of failing to discuss style and follow ups.
Please let me know about any questions or interest or bug reports about GIB.
0

#3 User is offline   cloa513 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,528
  • Joined: 2008-December-02

Posted 2010-July-07, 18:56

Generally that say a lot of diamonds 5+ and 4 spades and not three hearts and not many high card points. If you want to sure to force 3C is available.
0

#4 User is offline   Phil 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 10,092
  • Joined: 2008-December-11
  • Gender:Male
  • Location:North Texas, USA
  • Interests:Mountain Biking

Posted 2010-July-07, 19:24

Nope.
Hi y'all!

Winner - BBO Challenge bracket #6 - February, 2017.
0

#5 User is offline   neilkaz 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 3,568
  • Joined: 2006-June-28
  • Gender:Male
  • Location:Barrington IL USA
  • Interests:Backgammon, Bridge, Hockey

Posted 2010-July-07, 20:10

cloa513, on Jul 7 2010, 07:56 PM, said:

Generally that say a lot of diamonds 5+ and 4 spades and not three hearts and not many high card points. If you want to sure to force 3C is available.

We agree. If opener is minimum it is simply an attempt to improve upon playing 2 in a 4-3 fit.
0

#6 User is offline   Free 

  • mmm Duvel
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 10,728
  • Joined: 2003-July-30
  • Gender:Male
  • Location:Belgium
  • Interests:Duvel, Whisky

Posted 2010-July-08, 02:10

NF
"It may be rude to leave to go to the bathroom, but it's downright stupid to sit there and piss yourself" - blackshoe
0

#7 User is offline   Flame 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,085
  • Joined: 2004-March-26
  • Location:Israel

Posted 2010-July-08, 05:14

With 54 hands, no matter how strong there is no real need for bidding 2, you know of 8 spade fit.
So it more logical to use it for 54, now with this distribution and GF you will begin with 2 over 1, so it cant be GF, it also cant be too weak since you would have bid 2S, so it should be somewhere in between and should therefore be constructive but not forcing.
0

#8 User is offline   whereagles 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,900
  • Joined: 2004-May-11
  • Gender:Male
  • Location:Portugal
  • Interests:Everything!

Posted 2010-July-08, 08:07

agree to the weak 54 canape-ish interpretation. Really, I don't see what else it can logically be.
0

#9 User is offline   gwnn 

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

Posted 2010-July-08, 08:46

whereagles, on Jul 8 2010, 02:07 PM, said:

agree to the weak 54 canape-ish interpretation. Really, I don't see what else it can logically be.

-pick a major partscore (2-4 in the majors)
-mild game try with 5 and 5
-pick a partscore with 4 and 4


Not that I'd play any of these but I know several popular treatments (of other auctions) that are inferior to all these
... and I can prove it with my usual, flawless logic.
      George Carlin
0

#10 User is offline   peachy 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,056
  • Joined: 2007-November-19
  • Location:Pacific Time

Posted 2010-July-08, 11:44

Not forcing. Just a cheap way to try to find our best partscore fit, responder has only 4-card spades and probably 5+ diamonds.
0

#11 User is offline   Cascade 

  • PipPipPipPipPipPipPipPip
  • Group: Yellows
  • Posts: 6,760
  • Joined: 2003-July-22
  • Gender:Male
  • Location:New Zealand
  • Interests:Juggling, Unicycling

Posted 2010-July-08, 14:30

I am not an expert on support doubles but I can't see how a minimum bid when we have so far promised only minimum values and partner has essentially forced us to make another bid can be anything other than nonforcing.
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

#12 User is offline   Gerben42 

  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 5,577
  • Joined: 2005-March-01
  • Gender:Male
  • Location:Erlangen, Germany
  • Interests:Astronomy, Mathematics
    Nuclear power

Posted 2010-July-08, 14:40

Agree with Wayne. I would expect something like

Kxxx
xx
Axxxx
xx
Two wrongs don't make a right, but three lefts do!
My Bridge Systems Page

BC Kultcamp Rieneck
0

#13 User is offline   FrancesHinden 

  • Limit bidder
  • PipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 8,482
  • Joined: 2004-November-02
  • Gender:Female
  • Location:England
  • Interests:Bridge, classical music, skiing... but I spend more time earning a living than doing any of those

Posted 2010-July-10, 03:44

How about this auction:

1 - pass - 1 - 2
Dbl* - pass - 2

* support

Is 2 forcing or not? It has to show at least invitational values, but can opener pass on a minimum 3352 or 4342?

(we saw Meckwell disagree about this sequence on vugraph a while back)
0

Page 1 of 1
  • 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