The AlphaGo paper might be what you need. It requires some work to understand, but is clearly written. I read it when it came out and was confident enough to

The AlphaGo paper might be what you need. It requires some work to understand, but is clearly written. I read it when it came out and was confident enough to give a talk on it. (I don't have the slides any more; I did this when I was at a FAANG and left them behind.)