[blml] When to late

[Harald Skjæran]

On 04/01/07, David Grabiner <grabiner at alumni.princeton.edu> wrote:
> From: "Sven Pran" <svenpran at online.no>
>
> >> On Behalf Of David Grabiner
> > ...........
> >> > On the contrary if late discoveries make it likely or even probable
> >> > that a partnership has created UI using some sort of concealed
> >> > partnership understanding I see every reason to try an accusation
> >> > of a Law 16A2 violation on such basis within the correction period.
> >>
> >> It doesn't need to be a concealed partnership understanding, just
> >> something which might reasonably not have been discovered at the
> >> table.  For example:
>
> I haven't given any specific hands because I do not have an example; the
> purpose of this post was to illustrate a theoretical point, which is that UI
> might not be discovered until the correction period because players do not
> always look at the hands in detail when they do not suspect UI.
>
> >> W   N   E   S
> >> 1C  P   1H  1S
> >> 2H  3S  4H  4S
> >> X
> >>
> >> West, who has only three hearts, forgot that E-W were playing support
> >> doubles.  East explains that 2H promises four (in response to a
> >> question, or because the raise promising four is alertable), giving
> >> UI to West.  The UI suggests doubling over bidding 5H or making a
> >> forcing pass which East could convert to 5H.  South claims 4Sx down
> >> two before the play is finished, so he doesn't discover the heart
> >> position.  Only when the hand records come out does South see that
> >> West's hand doesn't correspond to East's explanation, and that he
> >> might have been damaged because 5H could go down.
> >>
> >> E-W may not have done anything wrong, but South needs to have the
> >> right to claim damage from UI.
> >
> > Excuse me, but what damage can South claim?
>
> > Would West not have doubled if he had not have the UI that he should have
> > four hearts?
>
> This is the possible damage.  The UI is that East's calls will be based on
> an incorrect assumption about West's hand.  If West is 3=1=4=5 with good
> clubs, both double and forcing pass could be LAs for a West who has only
> shown three-card support.  However, West knows that East will expect
> four-card support, and may compete to 5H expecting 4=1=3=5 opposite, which
> would be a typical forcing pass for a West who has shown four-card support.
> Given the UI, if 5H is the right contract, East will probably bid it even if
> West doubles.
>
If you change the hand patterns above to 3-4-1-5 and 4-3-1-5,
respectively, I fully agree with David.


-- 
Kind regards,
Harald Skjæran