This is a visualization of “the game of the century” between Donald Byrne and a 13 year old Bobby Fischer.
Squares are more blue the more black peices can move to them and are more red the more white pieces can move to them. The yellow circles are the kings.
I think that the rigidness of the shape a piece causes in this visualization combined with the expert moves of these brilliant players makes for an interesting pattern. I particularly like the checkmate sequence in the last couple of moves.