The speaker thinks AI systems probably received substantial chess-related training data from publicly available sources.

“So there's a case,”

“may have seen by transcripts”

“the way, they've”

“of games of chess”

“seen transcripts, they've seen the explicit rules in Wiki and know they've been trained on Wikipedia.”

“They've probably read like Bobby Fischer played chess,”

“which is how I learned.”

“learn to play chess so they have books on chess and so”

“they will be related read everything and what is the famous phrase publicly and privately available sources or whatever that wasn't quite the famous phrase but you get the idea so I think they probably actually have a lot of data on chess and just as a side note on transparency from the scientific perspective it's very hard to really evaluate these systems because we don't know what's in the training set either”