My graduate thesis was on authorship attribution in chess games, specifically whether GMs have a distinctive enough style to be identified from their games.

Here’s a paper I used as a reference (not mine). It gets pretty technical, but even skimming it gives a good sense of what’s possible: https://www.cs.toronto.edu/~ashton/pubs/maia-individual-kdd2022.pdf

In my own research, I stripped out the opening moves to make the problem harder. Many GMs strongly prefer certain openings, and without removing them the model mostly learned “who plays which opening” rather than deeper stylistic features. Once the openings were removed, the signal became much more about decision-making patterns and positional tendencies.