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Would have been a nice slam GIB insisted on its first suit

#1 User is offline   ochinko 

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Posted 2015-October-25, 15:01

http://tinyurl.com/o465pbu

You may find the opening too light, but there were 11 3D contracts in the traveller, only one 5D, and no 6D.
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#2 User is offline   1eyedjack 

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Posted 2015-October-25, 15:07

The explanation of 2S is truncated, but I believe that it promises at least 3 card Spade support. This is highly relevant to the subsequent auction.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.

Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. mPosted ImagesPosted ImagetPosted Imager-mPosted ImagendPosted Imageing) tr. v. - Any bid made by bridge player with which partner disagrees.

"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"

"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
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#3 User is offline   Bbradley62 

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Posted 2015-October-25, 21:45

View Post1eyedjack, on 2015-October-25, 15:07, said:

The explanation of 2S is truncated, but I believe that it promises at least 3 card Spade support.

Yes, and the explanation of 6 confirms this.
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#4 User is offline   ochinko 

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Posted 2015-October-26, 00:27

View Post1eyedjack, on 2015-October-25, 15:07, said:

The explanation of 2S is truncated, but I believe that it promises at least 3 card Spade support. This is highly relevant to the subsequent auction.

I thought the explanation on the 2S says 2-5 spades.

Wouldn't I promise 5 hearts if I pass the double?

How does the number of spades go up when I raise diamonds?
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#5 User is offline   Stephen Tu 

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Posted 2015-October-26, 01:06

View Postochinko, on 2015-October-26, 00:27, said:

I thought the explanation on the 2S says 2-5 spades.

Wouldn't I promise 5 hearts if I pass the double?

Not the way most people play it. It's so unlikely that you really want to play 2h doubled that it's not worth giving up the pass for this. With very good 5H you can rdbl I guess.

Most advanced bidders play that 2s = 3+ spades, pass = 2 spades. This enables responder to do quite a few more sequences, some starting with redouble being a retransfer, vs. other meanings not starting with redouble.

Quote

How does the number of spades go up when I raise diamonds?

Well this should be fixed.

The thing is that the bidding rules are kind of based on auctions that are kind of likely to occur. Given that GIB doesn't even cater to 6cd m opening 1nt, it's not surprising that 5d is poorly defined. Most people just raise to 4d, and never bid 5d, because partner might want to play 4 only spades. It's certainly an auction I've never perpetrated in 20+ years of bridge playing.
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#6 User is offline   1eyedjack 

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Posted 2015-October-26, 01:24

View Postochinko, on 2015-October-26, 00:27, said:

I thought the explanation on the 2S says 2-5 spades.

I just think that you are mistaken here. It is not that rare a sequence so next time it crops up you can pay attention and confirm.

It is rather futile to get into a debate about what is the best set of continuations over the double, or what is standard or popular among humans. The only relevant issue is how GIB has been programmed.

So if you want to support Diamonds without showing a Spade fit, just start with pass over the X and THEN raise D next time.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.

Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. mPosted ImagesPosted ImagetPosted Imager-mPosted ImagendPosted Imageing) tr. v. - Any bid made by bridge player with which partner disagrees.

"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"

"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
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#7 User is offline   iandayre 

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Posted 2015-October-27, 10:41

View Postochinko, on 2015-October-26, 00:27, said:

I thought the explanation on the 2S says 2-5 spades.

Wouldn't I promise 5 hearts if I pass the double?

How does the number of spades go up when I raise diamonds?


GIB follows standard practice in this area. Pass of the double shows a doubleton in partner's suit, and says nothing about the holding in the transfer suit. With a strong holding that you believe is likely to take 8 tricks with that trump suit, you should redouble.
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