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Simulation: Do you balance? 1S-P-P-? 764-K-J103-AQJ652 at IMPs both vul

#1 User is offline   jdeegan 

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Posted 2007-February-27, 18:13

:) I generated 100 hands using a loose screen and Pavlicek's random generator. From this I winnowed it down to 49 hands that fit the bidding. As is often the case with forum hands, the choice between alternatives (passing or 2♣ in this case) was fairly close. According to my (admittedly imperfect) analysis, bidding 2♣ was a winner 26 times and a loser 15 times with eight cases essentially even. 2♣ was a big winner five times (club and NT games) and a big loser five times (three heart games).

Observations:
1) wide variety of outcomes - no one or two consistent themes
2) the big swings are about even
3) better to balance with 2♣ against strong club systems and WJS opponents
4) worse to balance against old fashioned Eastern Scientific players who open 1♠ with heavy two suited hands
5) on about one third of the hands' outcome depends on skill of players - better to balance vs weaker players - poor play of 1♠ less a factor than opponent's poor competitive bidding and defense versus your contract. Complicate the hand against lesser opponents.

One potential double game swing hand showed up.
Scoring: IMP

1♠-P-P-2♣


Would you find the stiff king of clubs offside? Or the diamond ruff versus 4♥?
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#2 Guest_Jlall_*

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Posted 2007-February-27, 18:50

Way too subjective regarding some hands that north would pass on and many hands that east would pass on. Many easts would respond on this hand for example.
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#3 User is offline   jdonn 

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Posted 2007-February-27, 22:00

Maybe not the diamond ruff, but I bet I would take my 4 top tricks.
Please let me know about any questions or interest or bug reports about GIB.
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#4 User is offline   cherdano 

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Posted 2007-February-27, 23:58

Of course I would drop the king when RHO passes 1♠.
The easiest way to count losers is to line up the people who talk about loser count, and count them. -Kieran Dyke
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#5 User is offline   jdeegan 

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Posted 2007-February-28, 14:07

jdonn, on Feb 27 2007, 11:00 PM, said:

Maybe not the diamond ruff, but I bet I would take my 4 top tricks.

:) Oooops, transcribed the wrong hand.
Scoring: IMP


Some might not open the West hand for 1♠. Others might bid with the North hand. The subjective nature of this type of analysis makes it much more useful to the analyst than to anyone else.
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#6 User is offline   cherdano 

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Posted 2007-February-28, 15:02

Uhm, I would think most would not open a 3-loser hand with 6 great diamonds and 5 spades 1♠. And I don't know anyone beyond beginner's who would pass 1♠ with the East hand.
The easiest way to count losers is to line up the people who talk about loser count, and count them. -Kieran Dyke
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#7 User is offline   bid_em_up 

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Posted 2007-February-28, 15:15

cherdano, on Feb 28 2007, 04:02 PM, said:

Uhm, I would think most would not open a 3-loser hand with 6 great diamonds and 5 spades 1♠. And I don't know anyone beyond beginner's who would pass 1♠ with the East hand.

I wouldnt pass the East hand. I would call the director, since I have 14 cards. :)
Is the word "pass" not in your vocabulary?
So many experts, not enough X cards.
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#8 User is offline   whereagles 

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Posted 2007-February-28, 16:00

There's a known technical bug with pavlicek's generator. The hands it gives are more freak than the theoretical odds predict.

Unless pavlicek corrected the bug, your simulation is statisticall wrong :rolleyes:
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#9 User is offline   marcD 

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Posted 2007-March-01, 05:46

For whatever it's worth i would pass since there is a fair chance than the opponents are cold for 4H. If i were to balance I think 3C better desribes my hand (provided it is natural :))
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