Visual Look at 2 Million Chess Games: Part 2

We’re looking deeper into the amazing MillionBase database with over two million chess games to see what else we can learn about the data specifically, and possibly about chess in general. I have analyzed some of this data in Part 1. If you haven’t seen that, feel free to give it a read.
This post will focus on other aspects of the data, and I have drawn from some reader suggestions from the previous post.