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ATB Defense

#1 User is offline   rogerclee 

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Posted 2010-February-16, 13:04

Scoring: MP


2N P 3N AP

MP vs bad opps

UDCA, no smith

Lead: K (asks for attitude)

1) K - low - 2 - low
2) 8 - K - 9 - low
3) low - low - Q - low

-400
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#2 User is offline   billw55 

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Posted 2010-February-16, 13:12

Why did south duck the diamond?
Life is long and beautiful, if bad things happen, good things will follow.
-gwnn
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#3 User is offline   Jlall 

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Posted 2010-February-16, 13:17

Ducking the DQ is lol. North should encourage clubs imo so that his partner knows not to get in and play a spade (the 2 looks encouraging unless it's stiff 2), so that might be a mistake, but it shouldn't induce south to duck the diamond. In fact, clarifying the club position should make it very obvious to south not to duck the diamond because declarer has club length, so arguably north made a good play.

People need to stop trying to be brilliant with these ducks, if you are not good then just win queens with your kings or stuff like this will happen over and over and over /rant.
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#4 User is offline   gnasher 

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Posted 2010-February-16, 13:18

Quote

Why did south duck the diamond?

Because he thought declarer might have AJxx AQ AQJ QJ10x
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
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#5 User is offline   Jlall 

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Posted 2010-February-16, 13:27

gnasher, on Feb 16 2010, 02:18 PM, said:

Quote

Why did south duck the diamond?

Because he thought declarer might have AJxx AQ AQJ QJ10x

Is that what he thought? Then why didn't partner give count with T8x? Just being tricky?

and then why can't declarer have AJxx AQ AQx QJTx also? Or any number of hands. It is just ludicrous.
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#6 User is offline   Jlall 

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Posted 2010-February-16, 13:37

Ok this is what I said in private, but it sums up how I feel:

1) It might be possible for parnter to have not given count with T8x (it can't really cost as far as I can tell, but often partner can falsecard in the first suit they play)

2) It might be possible to give them a guess by ducking when partner has not given count, or when they have AQJx

3) You might gain if they guess the play wrong later, because they burn their entry

All of these things are possible. However, it's also possible you are just losing a trick outright, as in them having AQ or AQx (note AQx should be more likely than AQJ, because partner cannot afford to split JTx for bridge reasons).

My primary goal is going to be to not lose a trick outright, and to assume partner has signalled well unless he simply could not (ie, low from JTx is very possible, declarer could have KQ9xx). This will always be true unless I have a very solid and sound reason for thinking that there is a specific layout that exists where ducking is right. As of right now, I really have no reason to suspect that layout to be more likely than any other layout, and I'm not gonna risk something stupid like this. It is imo a complete hero play by someone who has read 1 too many books.
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#7 User is offline   wclass___ 

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Posted 2010-February-16, 14:02

I would suggest different ATB

1) ♠K - low - 2 - A
2) J
Seeking input from anyone who doesn't frequently "wtp", "Lol" or post to merely "Agree with ..." --sathyab
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#8 User is offline   jdonn 

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Posted 2010-February-16, 14:30

I agree south was being way too clever. No need to try and be a genius because it beats (probably) on a particular layout when it costs on so many more.

Any criticism of north for discouraging clubs is possibly correct (or possibly not) but definitely obscure, he gets little to no blame. In fact I think discouraging clubs might have made it easier for south.
Please let me know about any questions or interest or bug reports about GIB.
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#9 User is offline   Pict 

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Posted 2010-February-16, 15:03

Perhaps more to the point is whether any of you would have ducked the spade, putting a sure contract on the floor.
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#10 User is offline   Jlall 

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Posted 2010-February-16, 15:06

Pict, on Feb 16 2010, 04:03 PM, said:

Perhaps more to the point is whether any of you would have ducked the spade, putting a sure contract on the floor.

Why is that more to the point? Sometimes your opponents make mistakes, it is your job to capitalize on them. Obviously south had some read from the tempo that RHO had ducked. If our opps always played perfectly, we'd never win.
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#11 User is offline   Pict 

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Posted 2010-February-16, 15:11

Fine - I 'agree' with the idea of taking the diamond King.
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