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Bob,

With east hand fixed, it is much more easier and I can do that now. (No constraints on south and west, it will just give the number of tricks East hand takes when north opens 3.

Edited:
Here it is for 2500 deals:

Tricks taken by East hand in NT after a 3 opening :

5 or less ::::::::::::> 3.9%
6 ::::::::::::::::::::> 6.8%
7 ::::::::::::::::::::> 9.3%
8 ::::::::::::::::::::> 13.4%
9 or more ::::::::::::> 66.6%

that 3NT bid looks like a percentage action even if that 66.6 figure is kind of frightening:-)

April 16, 2015
Franck Guerrero edited this comment April 16, 2015
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Aviv,

no, as I didn't constrain south hand. I had no time for that and wanted just to have a raw and quick idea of what was the best action as I felt reopening with W was clear.

For constraining south hand, we would have to consider hands that bid game and hands that continue the preempt, and I don't think the parameters to decide this are the easiest ones to determine…

Yes I'm lazy :-)
April 16, 2015
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Bob

I was more worried not by 3 going down but by reopening giving a chance to retrieve a game in NS.

I chose the easiest way for the parameters (kind of laziness ;) and i did it very quickly without much thought…). I could perform a simulation on East hand but with which hand E will bit 3NT ? To me, 3NT could be a brute force bid i.e. any balanced hand 16+ with stopper or a 7th card running suit with a stopper…

The hardest part of simulation is to well constrain the hands …
April 16, 2015
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I just ran a quick simulation of 2500 deals with (very) basic parameters :
- North is 7s with at least 2 top H from 5, less than 10 HCP, no 4 card M
- East is either less than 17HCP, or less than 13HCP if single/void in or less than 13HCP if 5 of any suit
- No constraint on South

I didn't check all the cases but roughly :

- Game in ==> 19.84 %
- Game in while game in or NT ==> 2.2%
- Partial in ==> 22.12%
- Partial in while game in or NT ==> 6.48%
- 3 goes down ==> 58.04%
- 3 goes down while game in or NT ==> 31.76%

Results are double dummy so it may not reflect reality but it seems that reopening with W hand is not really the percentage action..
April 16, 2015
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I ran (quite) the same sim last night over 100.000 deals with double dummy solver.

To stick to the OP, I used the following parameters :

South:
- 14-16 HCP
- semi-balanced (i.e. no singles or voids, no 7 card suit)
- less than 4 cards in any major

North :
- 10-15 HCP
- 4 cards or 4 or both
- no single or void major

East:

- any hand except those containing 4+ with at least 2 top honors

Results with W hand from the OP:

K: 10.11%
J: 10.15%
9: 10.06%
5: 9.16%
4: 6.49%
5: 9.4%

Best: 17.99%

Results with W having 874 instead of Q74:

K: 9.84%
J: 9.98%
9: 9.39%
5: 8.62%
4: 9.25%
5: 7.97%

Best: 17.77%

Don't know if these results are really useful (as double dummy solving is quite rare at the table) but anyway it seems that overall lead is the winner :-)
April 10, 2015
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None.

With or without screen, full disclosure is required.

However, IMO, it's easier to achieve with screens as you get rid of most of the blatant UI issues that are often discussed here.

March 25, 2015
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Maybe I'm alerting too much then ;)
but typically I would alert such a 2NT bid as it would show for my partnership 2 places to play…
and if asked, I would disclose how I think my p would interpret my bid…or something like “undiscussed but should show xxx”
March 25, 2015
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If behind screens, I suspect the 2NT bid had been alerted ? If so it seems quite normal that the opponent on the same side of the screen asked about the alert, doesn't it ?

It looks strange to me, to:
1) Alert a bid and then,

However, if the 2NT bid has not been alerted, then undiscussed seems OK
March 25, 2015
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Or add filtering for that module in adblock, it reduces the size…
March 18, 2015
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Sure, as every regional/sectional spot where are held regional/sectional events have their own screens.
For example, where I play sectional/regional, there are roughly enough screens for 4 sections of 15 tables. And I think it is the same for each of the 30 districts.
I suspect though that the qualification process may differ from the US, here you have to qualify from sectional event to regional event and finally to national finals.
March 18, 2015
Franck Guerrero edited this comment March 18, 2015
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If i remember well, there are 3 rooms at the seat of French Bridge League which could host roughly 30 screened tables each.. It is not so far from 100.

And more than that, even finals for lower strats players are played with screens, as it should be IMO.

And true, as Marc stated, that I only play without screens in clubs, charity tournaments or festival. But any official event is played with screens.
March 18, 2015
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Indeed, the intent was to know if 2 was an option or 4 automatic.
Didn't plan to have also so many 2 bidders…
Feb. 16, 2015
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So it seems it was close :-)

5
KT843
AKQ87
T3

and S:
9876
Q2
542
AKQ2

Auction went 5 p p X
for down 1 was worth 7/42

Pass over 4 for down 1, when s are 2-2 and s 3-2, was worth 28/42

Thx all for your comments though I still don't know what is the percentage action :-)
Feb. 16, 2015
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Partner is always at least 5-5. A typical overcall would be:
xx
KQ10xx
AQJxx
x
Feb. 13, 2015
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we don't play 2/1 but my p made a 2 relay on this hand just in case opener has a nice fitted hand. I had not and we played 2 :)
Oct. 10, 2013
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Thanks for the votes, wish i had been a hero but I didn't find the killing lead…

Full hand was:

N: Q982…AK4….10854..J10
E: AK10…Q1086..AJ92…74
S: J5…..J52….KQ3….AK962

Only a lead would have set it…
Sept. 18, 2013
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maybe because part knows s are 4-4, has no honor and is looking for the setting trick ?

According to 8 switch, declarer's hand should be 3334 or 2335 and so one of the following:

Kxx xxx QTx AKQx ==> only 14 count but sometimes…
KQx xxx QTx AKQx
Qxx or xxx Axx QTx AKQx ==> 9 tricks whatever I do

xx Axx QTx AKQxx ==> 9 tricks whatever I do
Kx xxx QTx AKQxx
KQ xxx QTx AKQxx ==> declarer should have tested s after cashing one

if 8 was a deceiptive move with a honor, I will not be enough clever to find that part has switched 8 with KQ8x.
Sept. 13, 2013
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8. No hope if declarer has A. Assuming 8 from part shows no interest in , declarer has already 8 tricks 4, 3 and A. So hope for A in part hand…
Sept. 13, 2013
Franck Guerrero edited this comment Sept. 13, 2013
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2. it looks like declarer is 3154 with A. Hope partner has a minor stopper and K. If declarer ducks the , time to get back to and eventually cash 3, 1 and the partner minor stopper
Sept. 9, 2013
.

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