[jillybean]

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IMP, vulnerable

[Cyberyeti]

jillybean, on 2011-November-09, 18:36, said:

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IMP, vulnerable

1♠, reverse the major suit high cards and there's more of a case for 2♣.

[jillybean]

If you start 2♣ the auction proceeds....

2♣:2♦
2♠:4♦

[wyman]

jillybean, on 2011-November-10, 09:22, said:

If you start 2♣ the auction proceeds....

2♣:2♦
2♠:4♦

Wow. Do you have agreements about GSF? With solid agreements about what the 6-level steps show, I'd bid 5N GSF. If you had e.g.,
6C = 0 trump honors
6D = trump Q
6H = A or K, 3 trumps
6S = A or K, 4+ trumps
as suggested on
http://www.bridgehan..._Slam_Force.htm

then this auction is extremely clean. Without the K, I'll bid 6S. With the K and 4, I'll bid the grand comfortably. With the K and 3, I'll still bid the grand. Even on a trump lead, I should be able to ruff 2 diamonds for 6 spades, 3 diamonds (1+2 ruffs), 3 hearts, and either the ace of clubs or jack of hearts, or stiff DK and trumps 2-2, or the lead of the ace of clubs with CK in dummy, or ...

[ggwhiz]

Cyberyeti, on 2011-November-10, 04:13, said:

1♠, reverse the major suit high cards and there's more of a case for 2♣.

I agree although 2♣ is really tempting and ok.

On your auction I can bid 5nt as a graded grand slam force. Responses are

6♣ - ♠Q or less (then 6♦ would ask for the Q on a differnet hand) Punt 6♠?
6♦ - 1 of the top 2 (maybe punt the grand?)
6♥ - 1 of the top 2 with extra length (definitely punt the grand)

[Cascade]

1♠ looks normal to me.

[Zelandakh]

I think we can improve on these 2 schemes. For example,

6C = K or Q
... - 6D = ask
... - ... - 6H = Q
... - ... - 6S = K and min length
... - ... - 6N = K and extra length
6D = A
... - 6H = ask
... - ... - 6S = min length
... - ... - 6N = extra length
6H = K and Q
6S = no AKQ

On the given hand, what would everyone play 5C over 4D as? This surely cannot be a normal cue bid.

[wyman]

AKQxxx
xx
AKQ
AK

?

edit: this is too much, but you get the idea.

[Cyberyeti]

I take it everybody is agreed this is a splinter nowadays ?

In the stone age, this is what you'd bid with x, xxx, KQJ10xxx, xx.

If you're not a regular partnership (particularly if partner is fairly aged), you might consider bidding some number of diamonds on the way just in case.

[han]

Almost a century ago people played Culbertson's 4NT-5NT convention but nowadays some version of blackwood is quite popular. Similarly, this auction is nowadays almost unanimously played as a splinter.

5NT looks good.

[jillybean]

Our agreements following GSF are simple, bid the grand with 2 of the top 3 honors.

And yes, 4♦ is a splinter

[wyman]

jillybean, on 2011-November-10, 10:33, said:

Our agreements following GSF are simple, bid the grand with 2 of the top 3 honors.

And yes, 4♦ is a splinter

Get better agreements!

6S won't be a disaster. They'd have to bid to grand and make the grand at the other table for it to matter, so I guess you could RKC (puke) and bid the grand if you hear 2, and otherwise bid 6S. You'll miss the grand when P has the SK and not the CA.

At MP, I might bid 7 after hearing 1KC, since I think him having the SK is > 50% (and I have chances if we're missing the SK anyway). But I don't have enough info/confidence to bid grand at IMPs.

[han]

wyman, on 2011-November-10, 10:41, said:

I guess you could RKC (puke) and bid the grand if you hear 2, and otherwise bid 6S.

You could also bid 7 after you hear 1, this is an almost 75% grand.

[wyman]

han, on 2011-November-10, 10:44, said:

You could also bid 7 after you hear 1, this is an almost 75% grand.

How are you coming up with that number?

[jillybean]

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IMP, vulnerable

I guess lacking any fancy GSF this is how the auction continued..

2♣:2♦
2♠:4♦
4♥:5♣
5♦:6♠

[wyman]

why 4♥?

Ask yourself: was opener trying to elicit some info from responder? Was opener trying to give responder info that might allow responder to make an accurate decision later? Or was opener just cuebidding for the hell of it?

[ggwhiz]

wyman, on 2011-November-10, 10:52, said:

How are you coming up with that number?

Partner has it or it's onside with whatever trump split that makes it "almost" 75% assuming a splinter showsz 4 trumps I guess.

[wyman]

ggwhiz, on 2011-November-10, 11:09, said:

Partner has it or it's onside with whatever trump split that makes it "almost" 75% assuming a splinter showsz 4 trumps I guess.

i wouldnt assume 4 trumps, since more often than not in this auction, opener has long trumps. And of course, we are also missing the J and 10.

[Cyberyeti]

wyman, on 2011-November-10, 11:11, said:

i wouldnt assume 4 trumps, since more often than not in this auction, opener has long trumps. And of course, we are also missing the J and 10.

Correct, don't you splinter with xxx, Jxxxx, x, KQxx having given a negative to 2♣ when partner bids 2♠ ?

[jillybean]

wyman, on 2011-November-10, 11:09, said:

why 4♥?

Ask yourself: was opener trying to elicit some info from responder? Was opener trying to give responder info that might allow responder to make an accurate decision later? Or was opener just cuebidding for the hell of it?

With no fancy GSF I don't see many options here, if we don't start a cue bid sequence we simply have to guess the level.
4♥ is likely to elicit a first round club control from partner, wouldn't 5♦ be understood as a cue and last try at slam. Partner if you have any thing you haven't shown so far, bid the slam?
We have shown spades, hearts and the lack of KC must suggest to partner that we have a void, obviously a club void.