pretender Posted February 9, 2010 Report Share Posted February 9, 2010 Why is it programmed to do this?Or rather, in games such as robot races where there are 3 robots, can we turn this feature off? Example: Dummy KQJ9xx in a side suit in NT GIB is behind dummy with Txxx Declarer (GIB) leads a low one to K on board. The GIB defender plays the T! Quote Link to comment Share on other sites More sharing options...
barmar Posted February 9, 2010 Report Share Posted February 9, 2010 GIB's card play is based on double dummy analysis of hands consistent with the bidding and play so far. I think GIB assumes that declarer is also playing double dummy with the same hand it's analyzing. With that suit, either declarer has Ax, or declarer can lead a low card to knock out partner's now-singleton Ace, and later play the suit from the top. Either way, the Ten will drop, so it seems to GIB that it can never take a trick. What's really bad is when it takes away your guess in a two-way finesse, because it assumes you're going to get it right. Quote Link to comment Share on other sites More sharing options...
pretender Posted February 9, 2010 Author Report Share Posted February 9, 2010 Yes, it also has a knack of throwing away a 4-3 suit that it sees is breaking 3-3. So if they haven't tossed any, you know it's not breaking. Quote Link to comment Share on other sites More sharing options...
barmar Posted February 11, 2010 Report Share Posted February 11, 2010 Today GIB helped me again with this suit:[hv=n=sk8xx&w=s9xxx&e=sax&s=sqtx]399|300|[/hv]I led towards my hand, East correctly ducked, then took his Ace perforce when I played the other honor in my hand. When I later led towards the board, West was kind enough to play the 9, since he knew I would guess right anyway. Quote Link to comment Share on other sites More sharing options...
crazy4hoop Posted February 11, 2010 Report Share Posted February 11, 2010 Where's the Jack? Quote Link to comment Share on other sites More sharing options...
barmar Posted February 11, 2010 Report Share Posted February 11, 2010 Knew I was missing something! It was actually: [hv=n=sq8xx&w=s9xxx&e=sat&s=skjx]399|300|[/hv]I remember thinking that it was a nice example of restricted choice, but that doesn't mean I would have gotten it right. Quote Link to comment Share on other sites More sharing options...
pretender Posted March 6, 2010 Author Report Share Posted March 6, 2010 [hv=d=s&v=b&n=sk9863haq9dj3ct74&w=saj74h8654d9865c8&e=s5hjt3dakqt42cq62&s=sqt2hk72d7cakj953]399|300|Scoring: Total Points[/hv] Playing in a robot race GIB North arrives at 4SSouth dealerp-(p)-p-(1d)x-(2d)-3s-(4d)4s-ppp Opening lead DKTrick 2 HJ, HK, H6, HA! GIB N had to ruff a diamond, conceding two trump tricks, got the clubs right, but now had a heart loser for down 1. I want to know how reducing 3 heart winners into 2 could be a calculated play that gained in any scenario? Quote Link to comment Share on other sites More sharing options...
arigreen Posted March 7, 2010 Report Share Posted March 7, 2010 It's not clear to me why GIB did this. Keep in mind that if GIB believes that a certain play cannot cost, it may make that play, even if it doesn't have any evidence that the play will ever gain. Quote Link to comment Share on other sites More sharing options...
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