A Visual Look at 2 Million Chess Games

I wanted to do something like this for a long time, and finally I think it’s at a point where I can release this into the wild. We’ll take a look at more than 2 million games, taken from the MillionBase PGN database. I ignored any Chess960 games contained, but in total there are 2,197,113 games. I was interested to see what kind of visualizations I can do, and what patterns would be revealed by considering so many games.