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doubled and redoubled...


Guest Jlall

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x KQJTx xx Axxxx

 

r/r imps. 1N p 3N to you. It is a knockout match against an evenly matched team, you know if the auction goes the same at the other table your counterpart will not double (she is their client). You know your opps and your teammates play the same NT range. You know RHO is a pro.

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Light it up.

 

Loses when partner has no 4th round diamond stopper

Gains (a lot) when partner would make a disaster lead (very likely looking at our hand) and we could otherwise beat them

 

In theory this is correct. In practice this action never seems to work for me as advertised.

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Whenever I am thinking about making a penalty double of their game, I just ask myself what would jdonn do???

Lol did you like when you doubled some game yesterday and she asked me if that promised her suit, and I kinda just started laughing?

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Agree with Dbl. They might have 9 top tricks, but them's the risks. It's worth it if you knock the vuln game. Without a dbl, pard is almost certainly making a lead that will help declarer.
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Double. I'll never get a heart lead otherwise.

 

This could be a bloodbath.

I agree, I'm just not sure for which side.

 

But I still double. Maybe one day I'll learn. Certainly partner is most likely to lead a spade without it, and that won't be very helpful to us.

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I'll never get a heart lead otherwise.

I disagree.

 

I think double is a mistake.

 

If RHO has a strongish balanced hand than partner is broke and will be able to find the h lead all by himself, unless hes got something like 3H and Qx of clubs. If RHO has a long running D suit (likely imo) than X is just too dangerous.

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Something not yet mentioned is that the pot odds are pretty good. Let's assume -630 from the other

table (of course if the normal defense beats this it's hard to see how double can hurt unless partner leads the wrong short suit).

 

No double -> push

Double (and no redouble)

10 tricks -> lose 8

9 tricks -> lose 3

8 tricks -> win 13

7 tricks -> win 15 (I admit this is a rare outcome)

 

Double and redouble

10 tricks -> (-1400) lose 13

9 tricks -> (-1000) lose 8

8 tricks -> (+400) win 14

7 tricks -> (+1000) win 17

 

Of course you need to assign probabilities to these outcomes and you really need the implied odds factoring RHOs ability to redouble with various hands but you only need to go from never beating it to beating it a little less than half the time even if RHO only redoubles when it's correct to do so.

 

Finally, in a Swiss match you might need better odds on the beat because match length and the VP table both favor frequency of gain over size of gain.

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If we have a clear agreement that double asks partner to lead his weaker major I double. Pass otherwise.

 

It does seem very likely that without a heart lead 3NT will make easily, so doubling means we beat 3NT whenever it can be beaten. I think beating 3NT will be a lot more common than RHO having 6 or 7 diamonds and successfully redoubling.

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Double and redouble

10 tricks -> (-1400) lose 13

9 tricks -> (-1000) lose 8

8 tricks -> (+400) win 14

7 tricks -> (+1000) win 17

Are you saying thhat you plan to pass the redouble ?

I'd need to be at the table to decide, but I would definitely not auto-pull.

 

Note that the redouble is going to gain 5 IMPs in my scenario when right and cost 1 or 2 IMPs in my scenario when wrong. Therefore in theory RHO should almost always redouble, and we should almost always leave it in since the redouble doesn't give us much new information about RHOs hand. In my experience very few people would auto redouble on an odds basis, so I would consider pulling if I got a read.

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My average of overtricks when i XX a lightner 3Nt is something close to 2 overtricks. So with a 5-5 is strongly suggest you to run.

LOL sorry but what a load of bull. You AVERAGE a trick short of slam in 3NTXX? So you are often making slam on auctions like 1NT 3NT counting only the hands where your opponent has great defense! Well done.

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My average of overtricks when i XX a lightner 3Nt is something close to 2 overtricks. So with a 5-5 is strongly suggest you to run.

Then you're not redoubling frequently enough -- or you judge really really well.

 

Anyway say we pull and reach an 8-card fit, and (somewhat optimistically) partner has 1 trick and 1 tempo (ie can prevent 1 tap) in the pointed suits. In clubs the best we can do then is lose the top tricks and take our hearts, -500. On a bad day, we're going to find hearts where we are taking 6 tricks since we make no long clubs, -1100. Pulling looks very wrong.

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My average of overtricks when i XX a lightner 3Nt is something close to 2 overtricks. So with a 5-5 is strongly suggest you to run.

LOL sorry but what a load of bull. You AVERAGE a trick short of slam in 3NTXX? So you are often making slam on auctions like 1NT 3NT counting only the hands where your opponent has great defense! Well done.

My suspicion is that his sample size is pretty small :P

 

I've only played 3N xx'd twice at imps, and my average is 0.5 undertricks B)

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Here's a funny hand from a match between the US and Canadian Women's Teams for Beijing that was played in a match on BBO yesterday:

 

[hv=d=n&v=n&n=sa74h93dk1095cakj3&w=skqj32ha76d732c76&e=s985hkqj42d86c985&s=s106h1085daqj4cq1042]399|300|Scoring: IMP[/hv]

 

Canadian W doubled, American counterpart didn't.

 

Result 3NTX= and 3NT -1

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