I thought it was great. I haven't read the novel but I still enjoyed the series. In some ways it was a bit of a feel good fairytale of a show but still good imo.
Apparently Kasparov was a consultant on the show and the games that were used were based on actual grandmaster games. After watching the series I really enjoyed watching
@agadmator analyse some of the games on his channel.
Here's a good one, the final between Harmon and Borgov:
www.youtube.com/watch?v=oIMaTKOZG-8