[eleven20]

I was just reviewing hands played in robot duplicate, and found that robot played the same hand differently as declarer with various partners even though the bidding sequence was exactly the same. And so of course the outcome was a range of points among the various live participants, even though none of us had done anything differently.

I have been using BBO for only about two weeks. Is this normal, or am I missing something?

[Bbradley62]

In tournaments, robots are supposed to behave identically given identical situations. In the main (or relaxed) bridge club, there can be several different variations of robots playing. Please provide an example of the problem.

[Bbradley62]

From an ACBL Robot Dupe, I see this traveller: http://www.bridgebas...ername=eleven20

The auctions were the same at the tables of eleven20 and mo_lynx, yet one NorthGIB ducked the first trick and the other didn't. Have the routines changed while I was gone for the past 6 months?

[eleven20]

Bbradley62, on 2013-August-26, 22:33, said:

From an ACBL Robot Dupe, I see this traveller: http://www.bridgebas...ername=eleven20

The auctions were the same at the tables of eleven20 and mo_lynx, yet one NorthGIB ducked the first trick and the other didn't. Have the routines changed while I was gone for the past 6 months?

[eleven20]

Bbradley62, on 2013-August-26, 22:33, said:

From an ACBL Robot Dupe, I see this traveller: http://www.bridgebas...ername=eleven20

The auctions were the same at the tables of eleven20 and mo_lynx, yet one NorthGIB ducked the first trick and the other didn't. Have the routines changed while I was gone for the past 6 months?

[eleven20]

You found what I was writing about. Thanks.

[cloa513]

The problem is that North assumes the lead is from three diamonds and so to it, it doesn't what it plays- GIB has no safety play algorithm.

[Bbradley62]

cloa513, on 2013-August-27, 01:53, said:

The problem is that North assumes the lead is from three diamonds and so to it, it doesn't what it plays- GIB has no safety play algorithm.

This is not at all the problem being discussed here. The problem being discussed here is that both Norths heard the same auction and got the same opening lead; in tournaments, both Norths are supposed to make the same play given these identical situations. Whether that play is good or bad is not the point; the lack of consistency is the point.

[eleven20]

Bbradley62, on 2013-August-27, 10:10, said:

This is not at all the problem being discussed here. The problem being discussed here is that both Norths heard the same auction and got the same opening lead; in tournaments, both Norths are supposed to make the same play given these identical situations. Whether that play is good or bad is not the point; the lack of consistency is the point.

[eleven20]

I have sent more detail re this to the BBO help staff. So should hear back pretty soon.

[eleven20]

Help staff responded, says this looks like a bug and has sent to programmers to look at.