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Weird Sac? Bidding 7NT over 7S

#1 User is offline   mtvesuvius 

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Posted 2009-January-20, 15:44

I just had an odd thought... If your opponent opens 7, how profitable will it be to sac. 7NT? How often will 7NT make?... I ran a simulation on 2500 deals:

# of Tricks:
<7: 144
7: 159
8: 212
9: 267
10: 433
11: 578
12: 495
13: 212

Ave. tricks per deal: 10.1432

Any thoughts regarding this? Vulnerbility matters here, I guess :).

ofc I am assuming that the hand is not on lead.
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#2 User is offline   JLOL 

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Posted 2009-January-20, 15:51

This is why I play 7S p p X as takeout. Partner bids 7N and you make because the void is on lead, and 7S was cold because their hand was 13 solid.
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#3 User is offline   georgeac 

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Posted 2009-January-20, 23:13

JLOL, on Jan 20 2009, 04:51 PM, said:

This is why I play 7S p p X as takeout. Partner bids 7N and you make because the void is on lead, and 7S was cold because their hand was 13 solid.

LOL
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#4 User is offline   Codo 

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Posted 2009-January-21, 02:06

I think you need to discuss this deeply in any serious partnership. When you cannot handle this everyday problem, you will gift them millions of imps each session.

I think JLOLs approach is not deep enough. We play pass/double inversion here., which seems to be superior.
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#5 User is offline   rogerclee 

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Posted 2009-January-21, 03:09

uhhh lol
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#6 User is offline   FrancesHinden 

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Posted 2009-January-21, 05:12

What do you open in 1st seat looking at

AKQJ1098765
A
A
A

?
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#7 User is offline   rogerclee 

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Posted 2009-January-21, 05:19

FrancesHinden, on Jan 21 2009, 04:12 AM, said:

What do you open in 1st seat looking at

AKQJ1098765
A
A
A

?

at imps i would open 7 spades against adam kaplan but 7n against everyone else.
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#8 User is offline   Tomi2 

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Posted 2009-January-21, 07:20

JLOL, on Jan 20 2009, 04:51 PM, said:

This is why I play 7S p p X as takeout. Partner bids 7N and you make because the void is on lead, and 7S was cold because their hand was 13 solid.

and i thought I was the only one, who agreed this (with my former junoir partner)
Bad luck that there was no such hand at the last european championships :)
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#9 User is offline   mtvesuvius 

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Posted 2009-January-21, 08:01

I know... This was based on a player having 13. A more realistic sim would be based on any hand that would open 7, but how should I set this up? Anyway, I just thought is was a cool idea, but I'm sorta going around in circles...
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#10 User is offline   rbforster 

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Posted 2009-January-21, 09:27

FrancesHinden, on Jan 21 2009, 06:12 AM, said:

What do you open in 1st seat looking at

AKQJ1098765
A
A
A

?

Against mtvesuvius or JLOL and their takeout doubles, I think I open 7, against everyone else 7N. 7 gives up a little upside at MPs, but wins when instead you defend 7NX-13 for +3500.
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#11 User is offline   rbforster 

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Posted 2009-January-21, 09:37

mtvesuvius, on Jan 21 2009, 09:01 AM, said:

I know... This was based on a player having 13. A more realistic sim would be based on any hand that would open 7, but how should I set this up?

Of course there's no normal reason not to open 7NT with 13 top tricks, so if you open 7 you must have lots of solid (enough) spades and a void. You might have a side suit you think will come in too, like 8 solid + AKQTx or something.

The problem with the 7NT sac is that almost all hands opening a reasonable 7 will have ~2 outside suits controlled too (double voids are quite rare). So the defense, even when the 7 bidder isn't on lead, only has to hit one of his outside A's to clobber 7N. Sadly, you can't afford to use the X of 7NT by slam bidder to direct lead since if you were making 7, you can't afford to defend 7N undoubled even at favorable.
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#12 User is offline   helene_t 

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Posted 2009-January-21, 09:39

FrancesHinden, on Jan 21 2009, 12:12 PM, said:

What do you open in 1st seat looking at

AKQJ1098765
A
A
A

?

If you want to play this hand 7 in it is safer to play a 7 opening as Verdi, since if opps can start with a ruff from the 42 holding there is a chance that they are slugish and ruff with the 2 and p who is also void in the suit of the opening lead can overruff with the 3.
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#13 User is offline   ArtK78 

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Posted 2009-January-21, 11:23

I did have this hand recently:

AKJ9xxx
---
AKQxxx
---

Very close to a 7 opener.
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#14 User is offline   Hairy_Scot 

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Posted 2009-January-21, 12:08

JLOL, on Jan 21 2009, 10:51 AM, said:

This is why I play 7S p p X as takeout. Partner bids 7N and you make because the void is on lead, and 7S was cold because their hand was 13 solid.

ROFLMAO
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