[thorvald]

This deal looks pretty normal

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but see, what happens when I double 2♣

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Explanation of 2♦=3+♦, 12-14 total points, forcing to 3♠

[smerriman]

Not sure there's much to this one. 2♦ is an advanced robot bid; if its simulation of hands where you have rebiddable clubs finds that a game is worth a shot if partner has an accept of a diamond game try (it surely increases the odds, knowing your club honors are less valuable to you), then I can't argue with it. With better breaks it might have made..

[thorvald]

smerriman, on 2022-August-13, 18:12, said:

Not sure there's much to this one. 2♦ is an advanced robot bid; if its simulation of hands where you have rebiddable clubs finds that a game is worth a shot if partner has an accept of a diamond game try (it surely increases the odds, knowing your club honors are less valuable to you), then I can't argue with it. With better breaks it might have made..

I find it Ok, that West might upgrade the club-shortage, but then East should downgrade all hcp in ♣

[smerriman]

thorvald, on 2022-August-14, 08:31, said:

I find it Ok, that West might upgrade the club-shortage, but then East should downgrade all hcp in ♣

East's bid is based on a simulation too, so the human construct of "downgrading" is included in that.

From East's perspective, simulating hands where West has 12-14 points and at least a queen in diamonds, and South has those clubs, still shows game making almost every time, so it's not even close to a reject.

It's true that GIB can be a bit aggressive, since East's simulation doesn't take into account that West may have simulated too.. and conversely, West's simulation assumes East will only accept when it has a book-accept.. but there's really nothing you can do about that.