In addition to mathematics, I am an avid chess player. Here is my lichess account. If you'd like to have a chat with me over a game, shoot me an email.
Once upon a time, I was a hobbiest chess programmer (that is, I programmed computers to play chess). I remember being very frustrated at the quality of exposition on the topic, so I decided to write up some notes. Over the course of two years, those notes turned into a book, Chess Algorithms.
The book is available for free here.
The book is available for purchase here.