I think they're nice! I like the monospaced font for the axes. Fwiw, I would remove the legend in the case of there being only one curve, especially since you have good titles.
756 karma · joined June 23, 2014
[1]: http://en.wikipedia.org/wiki/Comparison_of_top_chess_players...
Doesn't seem like it. Magnus Carlsen has 2882.