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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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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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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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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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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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