This looks great! I’ve played a couple of games in the Open Sicilian and the French Tarrasch and there wasn’t a moment that I felt like I was playing against a computer. It plays some cheezy lines which I would expect from a lichess player.
On the user side - I think the review area would benefit from principle-based analysis similar to what is seen in chess.com. I am guessing that for it to happen, there needs to be a separate analysis engine that can detect positional motifs. I think chess.com did a decent job with that (better and more actionable than decodechess in my opinion).
On the tech side - I’m curious how this project differs from existing neural nets trained for lc0 such as bad gyal and maia?