<Comment deleted by user>
Very interesting. as a small sidenote, I find the colors hard to distinguish.
That Nf3 curve on 1st move though... I didn’t expect the Zukertort opening to have a growth chart that looks like a startup’s revenue line!
Clearly I’ve been underestimating the power of quiet flexibility. Excuse me while I go design a Zukertort opening poster immediately on mychessposters.com