xeno123 Posted June 15, 2012 Report Share Posted June 15, 2012 I believe there is a simple heuristic that could avoid some of the basic robot's most egregious and irritating blunders. Here's an example of the problem - at trick 8 in a 6NT contract, having already lost one trick, GIB plays a guaranteed loser for down one, when what would have been a winning play (cashing the diamonds) was available: http://tinyurl.com/87zojnb I'm assuming what was going on here was that in all its simulations GIB saw one down, and so it picked one of its losing plays at random. A simple heuristic that says play a known winner in that situation instead of a known loser would have fixed this. An analogous (and even more irritating) situation happens in defense when GIB randomly discards a high card that would have been a winner. Here the heuristic should simply say that when choosing among discards with (apparently) equivalent outcomes in the simulation, discard the lowest of the available choices. If I am correct in my analysis here, these are two easy fixes that would reduce blood pressure among basic-robot users! Peter Quote Link to comment Share on other sites More sharing options...
wodahs Posted June 16, 2012 Report Share Posted June 16, 2012 Along the same lines, when cashing from a choice of winners, GIB should first cash cards in suits in which the opp(s) are void, to apply pressure that might result in a bad discard by opps who are not playing double dummy. Quote Link to comment Share on other sites More sharing options...
Bbradley62 Posted June 16, 2012 Report Share Posted June 16, 2012 Now you're making it complicated :P Quote Link to comment Share on other sites More sharing options...
steve2005 Posted June 16, 2012 Report Share Posted June 16, 2012 i dont understand why GIB went down. if you cash AJ♥ then finess ♣you have 2♠4♥4♦2♣ for 12 easy tricks.GIB seems to have blocked the ♥ suit and not maintained a board entry Quote Link to comment Share on other sites More sharing options...
xeno123 Posted June 16, 2012 Author Report Share Posted June 16, 2012 i dont understand why GIB went down. if you cash AJ♥ then finess ♣you have 2♠4♥4♦2♣ for 12 easy tricks.GIB seems to have blocked the ♥ suit and not maintained a board entry Yes, there are 11 top tricks at the outset, and it's trivial to always establish another ♣trick. It's basically a laydown. GIB just got its entries tangled up, but fixing that sort of error is much harder I suspect. (I assume the advanced robot would have no problem with this hand). Peter Quote Link to comment Share on other sites More sharing options...
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