[lycier]

See two hands edited by me.


Hand-1

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Hand-2

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First issue:
We know HCP never be equal to TPs im many situations. However Gibs mistook TPs for HCP .

Second issue :
If you think the explanations of minor suit stayman on Gib CC are correct, how to sign off at three level?
So no way to stop it.
So rebid-3♣ is a preference for minors, sign off at three level,never force to game.
Any ideas?

[johnu]

This is a not so simple evaluation of the East hand whether game is a possibility. With a fit and the right controls, 5 or even 6 of a minor may be possible. If not, this may a partscore hand. GIB decided that the hand warranted a game force, which would probably be duplicated by my human players.

To signoff, East can bid 2NT to transfer to 3♣ and pass the response. You have to forget about finding a better diamond fit.

There is no invitational sequence with this type of hand in the GIB system, and probably in most systems you will find in real life. It's a low percentage hand type and most system designers will accept a loss in their designs.

[chasetb]

The 2♠ bid is forcing to game, and since GIB has points in the Major suits, it is always bidding 3NT.

[jdonn]

Hi, yes GIB simply evaluates the distribution of the east hands as enough for game. To sign off in a minor, GIB starts with 2NT with clubs, 3♣ with diamonds. Starting with 2♠ is already forcing to game. I hope that helps!