[lycier]

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2♥ says "Limited raise raise...".
Is it a limited self-raise bid? a new bid?

[johnu]

Description is "Limit major raise" - Redouble was a support double. I'm guessing the 2♠ description shows something like 6-9 total points, 5+ ♠, so 2♥ is the limit raise range [ie 10-12] bid showing 5+ ♠. I wonder what 2♦ shows in this auction?

[Bbradley62]

I'd expect 2♦ to be natural, whereas 2♥ is a cue bid of opponent's (implied) suit and is therefore artificial with game invitational values.

Edit: But, I do agree with Lycier that "Limit major raise" is a dumb description and should be removed.

This post has been edited by Bbradley62: 2015-March-07, 08:09

[johnu]

Bbradley62, on 2015-March-06, 20:42, said:

I'd expect 2♦ to be natural, whereas 2♥ is a cue bid of opponent's (implied) suit and is therefore artificial with game invitational values.

Maybe that's in GIB's library of bids, but in this auction, West is showing 4+ diamonds and East shows 2+ diamonds so E-W may have more diamonds than N-S. Both red suits are implied on this auction.

Also, note that the human player's 4♥ is described as a splinter, which shows the pitfalls of bidding without knowing what GIB system bids are supposed to show.