> adversarial evolutionary loop where new warriors are continually evolved to defeat the champions of all previous rounds.

Interesting. So you're including past generation champions in the "fights"? That would intuitively model a different kind of evolution than just "current factors"-driven evolution.

> We also found that this training loop produced generalist warriors that were robust even against human-written strategies they had never encountered during training.

Nice. Curious, did you do any ablations for the "all previous champions" vs. "current gen champions"?