Genius produced by Soviet communist system: Anatoly Karpov.
Genius produced by American capitalist system: Donald J. Trump.
I know Garry Kasparov retired, but is there anybody that was his equal throughout his career?
The only one I can think of is his long time rival Anatoly Karpov, when he was young, but is there anybody else?
I thought possibly Kramnik, since Kasparov lost to him in a title match, but I know Kasparov wanted to retire, so I don't know how much he really prepared for it.