[goffster]

http://tinyurl.com/jtpgnw3

So what's with 3D (alerted as denying 4H)?

Why not bid 3H (showing 4 hearts i presume and a 3 suited hand, oops, but that would be telling)?

[Stephen Tu]

It's also rather questionable why it should rebid 2♣ with only 4-4 in the minors rather than simply passing.

[wank]

goffster, on 2016-July-18, 20:17, said:

http://tinyurl.com/jtpgnw3

So what's with 3D (alerted as denying 4H)?

and what's with 1D (alerted as showing an opening bid)?

[lycier]

goffster, on 2016-July-18, 20:17, said:

http://tinyurl.com/jtpgnw3

So what's with 3D (alerted as denying 4H)?

Why not bid 3H (showing 4 hearts i presume and a 3 suited hand, oops, but that would be telling)?

Good hand and good topic.

1- Obviously Gibs don't know how to handle with this situation after 4th suit.
Here there are two best examples.
A- When with 1N interference :

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B- When without interference :

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Result : 4♥E=

2- After 4th suit, here programmers need to improve its bidding rules on Gib CC.

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Note 3♥ says " 4+♣,4+♦,4+♥,2-♠,11-16hcp,12-18TPs,forcing to 3N ".
Obviously "4+♥" is impossible, only 4♥.
However Gib has no way to rebid 3♥ showing 4-card ♥, in fact there is no related bidding rule.

[lycier]

Stephen Tu, on 2016-July-18, 20:40, said:

It's also rather questionable why it should rebid 2♣ with only 4-4 in the minors rather than simply passing.

Yes.
However if simply passing, unfortunately a ridicuous matter will happen.

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Note I only help West Gib to pass after 1N interference at the beginning.
So I think there is no related bidding rule.