That's what I wrote about what I took from the film "Searching for Bobby Fischer," from 1993. If you haven't seen it, consider watching it with unschooling in mind. The image is a still from that movie.
It's based on a true story, and the actor (Max Pomeranc) was a highly-ranked chess player for his age. They cast a chess player so he wouldn't need to pretend to be playing chess in the film.
If you want to know more about the person he was playing, and what happened in later years, the real Josh Waitzkin wrote this: The Art of Learning: An Inner Journey to Optimal Performance. He tells some chess stories, but the book is largely how he became a martial arts champion in his twenties. He reads his own audiobook. I've heard it. His ideas about formal learning are not as unschooling-friendly as the story in the movie is, but hearing it (or reading it) from an unschooling point of view won't change your satisfaction about what you and your children are learning.
What about Audiobooks?