Gib let us have no way to get a best final contract.

[lycier]

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After 3♦,Gib N should bid 3nt directly instead of 3♥ due to some stoppers in majors.

If not,after 3♥,3♠ I bid shows 4-card ♠,it will let me have no way to get 3nt as a best final contract.

Or worse still is that 3♥ usually implies no stopper in ♠,so for this low limited hand,3♥-rebid is a wrong auction,even basic robot.

Any idea?

[steve2005]

After 3♦,Gib N should bid 3nt directly instead of 3♥ due to some stoppers in majors.

If not,after 3♥,3♠ I bid shows 4-card ♠,it will let me have no way to get 3nt as a best final contract.

Or worse still is that 3♥ usually implies no stopper in ♠,so for this low limited hand,3♥-rebid is a wrong auction,even basic robot.

Any idea?

 

GIB isn't showing stoppers, its trying to show shape as best as it can, I don't think it has a specific bid for 4=4=5=0, so is just hoping responder can show 4♠ otherwise its pretty well committing to 5♦ unless responder has a unnecessary ♠ stopper.

 

But why is it showing suits, responder should be denying a 4M with 3♦ so it should be showing stoppers at this point.

 

lycier is correct the right "stopper" bid is 3N