MP, Best Hand South, 25c Robot tourney, Pro GIB 30
Somewhat lazily I played by doubleton Hearts in order low-high, at tricks 1 and 2. A third Heart followed, limiting me to 9 tricks.
At another table where the auction was identical, the first two tricks were identical except that declarer echo'd in Hearts, presumably to tell dummy that he had a doubleton. At that point East, who had exactly the same information as at my table (all missing Hearts now accounted for, and no helpful discards), decided to play a Club. Declarer rose with the Ace for 10 tricks.
This was not an Instant tourney where the excuse could be put down to a different version of GIB at each table. Clearly the collection of simulated deals generated by East in each case differed by reason of the order in which the Heart 3 and Heart 4 were played, despite that they are equal cards.
It may be a tall order to ask that GIB runs its sims identically in these situations, but I feel compelled to comment that in my opinion the current setup is undesirable.