In chess so much depends on opening theory, so the champions before the last century did not know as much as I do and other players do about opening theory. So if you just brought them back from the dead they wouldn't do well. They'd get bad openings.
Bobby FischerYeah, there are too many Jews in chess. They seem to have taken away the class of the game. They don't seem to dress so nicely, you know. That's what I don't like.
Bobby Fischer