wbartley Posted February 2, 2023 Report Share Posted February 2, 2023 https://tinyurl.com/22earn64 Anyone have a plausible explanation for this? Quote Link to comment Share on other sites More sharing options...
helene_t Posted February 2, 2023 Report Share Posted February 2, 2023 https://tinyurl.com/22earn64 Anyone have a plausible explanation for this?We have sometimes seen GIB defaulting to pass when there was a hole in its database. For example, it used to pass a 1NT opening if it had a hand that was too strong for 6NT but too weak for 7NT. I thought that bug had been fixed, but I can't think of any other reason why it would pass here. It seems unlikely that the simulations would show that pass is the winning action. Quote Link to comment Share on other sites More sharing options...
johnu Posted February 2, 2023 Report Share Posted February 2, 2023 This surprised even me Sometimes I LOL, sometimes I pound the keyboard in anger, but I'm never surprised :) Quote Link to comment Share on other sites More sharing options...
smerriman Posted February 2, 2023 Report Share Posted February 2, 2023 It seems unlikely that the simulations would show that pass is the winning action.Based on past threads, wbartley only ever plays with basic robots, which don't simulate. Advanced robots simulate, see that passing is insane, and thus never pass. To elaborate on the actual issue, the database basically says to bid 4♥ you need help in spades that this hand doesn't qualify for, and that you should stop in 3♥ with at most 12 HCP. But both of those, as well as 2NT, 3NT, and even 3♠ are marked as permitted bids for advanced robots to choose between. I reported this one myself on the forum ~ 6 years ago and it has come up in other threads since, but when I discovered it was a basic robot problem only, I realised that there isn't really any upside in them fixing it - plugging this type of bidding database gap is one of the main reasons the advanced robot algorithm exists. It's possible that the database gap is even deliberate, since it makes some sense that this is a situation where you would only want to decide by simulation anyway, and basic robots disabling half the algorithm was never really an intended feature of the code. Quote Link to comment Share on other sites More sharing options...
thepossum Posted February 2, 2023 Report Share Posted February 2, 2023 I think the problem is that South's bid was not forcing enough. - sorry it is forcing to 3 isnt it :) I find the game try bids rather confusing though, and inconsistentYou never know for sure what kind of try and how they are interpreted - asking for help or something else Quote Link to comment Share on other sites More sharing options...
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