[Flameous]

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1♦ is light natural 4+ and unbalanced and may have longer clubs. 1S natural, balanced GF may start with 1♥ (GF/relay, might have been better)

Any way to bid the seven comfortably or should east just punt?

Also, can I make that diagram bigger somehow?

This post has been edited by Gerardo: 2011-December-03, 11:14
Reason for edit: Made diagram to use hv tag

[TWO4BRIDGE]

Flameous, on 2011-December-03, 10:45, said:

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Also, can I make that diagram bigger somehow?

I changed the 400 300 to 500 400 for a bit larger.

[TWO4BRIDGE]

That 3H preempt sure cramped the "exploration" since a fit was not discovered yet, nor a gameforce ( GF ).

So, that got me to thinking.
Why not use 2C! as a GF ( could be artificial ) over a 1D open.
[ We have seen it used before here ( but not by me ) for 1-Major openings ) .

2C! would not deny a 4 card Major... as is usual for 1D - 2C! auctions.

Now the 3H-jump interference doesn't do much harm:
1D - ( p ) - 2C! - ( 3H )

And opener can pass! w/o a 4 card major ( w/o 4 cards ♠ in this case ) and not worry about a passout in a GF situation:
pass! - 4D ( and Responder and show his 4+♦ support, also w/o worry about partner passing )
4H! ( mixed cue ) - 4NT ( RKC for ♦ )
5S ( 2 + ♦ Q ) - 5NT ( K - ask, guaranteeing all key cards )
6C ( ♣ K ) - 7D

[TWO4BRIDGE]

The same 7D would be reached if 4H! ( by Opener ) were kickback-RKC for ♦.
Once all key cards are accounted for when Opener makes a K-ask , Responder would just leap to 7D eventho there is a small chance Opener does not have the ♣ K .

[Cyberyeti]

Well starting 1♦-2♦ (inverted not denying 4M)-(3♥)-4♣ as a shaping out bid (surely he could cue a major to have the strength to be able to bid 4♣ so this should be this type of hand)-4♥ kickback and E can count 13 tricks opposite A♠, AQxx♥ and Kxxxx♣ and bid 7N.

[mfa1010]

On the actual bidding east should be comfortable about bidding 7. I simply don't see what values west could have for his very aggressive bidding if not ♠A, ♦AQ, ♣K.