[Bbradley62]

I'm having issue with how BBO displays in Microsoft Edge (the browser for Windows 10) so I can't show the hand, but...

GIB deals holding ♠-, ♥Axxxx, ♦xx, ♣AQJxxx. The uninterrupted auction proceeds:

1♣-1♠
2♣-2♦
2N (forcing to 3N because 2♦ was forcing to 3N)

What would GIB be showing if he bid 2♥ over 2♦?

[lycier]

I answer this question by guess.

1- The meanings of 2♥ over 2♦ is " 4+♥,3-♠,11-15hcp,twice rebiddable ♣,12-16TPs,forcing to 3nt."
2- After 2♦,rebid-2nt is "2-♠,11-14hcp,twice rebiddable ♣,12+ TPs,likely stop in ♥,forcing to 3N."
3- After 1♠,rebid-2♥ is " opener reverse--- 5+♣,4+♥,3-♠,21-hcp,18-22TPs."

[lycier]

After 2♦,Gib opener should rebid 2♥ instead of 2N normally,best that you can provide the linke of that hand since I am difficult to believe advanced robot can do such auction if possible.

[Bbradley62]

lycier, on 2015-October-17, 06:22, said:

After 2♦,Gib opener should rebid 2♥ instead of 2N normally,best that you can provide the linke of that hand since I am difficult to believe advanced robot can do such auction if possible.

It was a basic bot, which should have the same bidding rules as advanced robot. This should be a bidding rules issue, not a simulate-the-best-response situation. I don't have access to the hand, as it was a "Just Play Bridge" hand and the "Export" button was not accessible in my new browser, which is an issue I will have to address separately.

[iandayre]

It certainly seems as though the hand qualifies even under the GIB definition to make the sane bid, 2H. I wonder why it doesn't. It has only 10 HCP, but both 2H and 2NT promise 11-14.

You lose a lot of the gain in opening light distributional hands when you don't show the distribution in subsequent rounds of bidding.