1. Kasparov i think he is best player ever.
2. Karpov
3. Fisher
4. Tal
Best Chess Player Ever?
I was reading about that, and I guess it's highly debatable. But most would agree that Kasparov, Fischer, and Karpov are all at least in the top 3-5.

I have posted something similar to this in a few of the other 900 identical threads:
Kasparov is the best we have ever seen, but only because Fischer gave up.

kasparov and fischer are probably best. The best players a long time ago don't know as much as grandmasters do today
True, one of the things to consider is that you really can't compare players from different eras.
Nowadays, we have openings that any 14 year old can memorize right out of a book. Fischer believed that that was ruining the game, claiming that that kid could gain an opening advantage on a player like Capablanca, since in other eras chess memorization wasn't as important, so he invented a game where you start in a random position, to test how much you really know, without anything you could memorize to gain ground.

Elubas wrote:
kasparov and fischer are probably best. The best players a long time ago don't know as much as grandmasters do today
Players in any competitive activity are defined by the quality of their opposition and rising to the challenges presented. If the point of this statement is that todays players are more intelligent, that would not be correct. The best players of the past would quite likely have been superior players even today. The knowledge that todays players have is built on studying the great masters of the past.

Lasker - "He who imagines himself capable should attempt to perform. Neither originality counts, nor criticism of another's work. It is not courage, nor self-confidence, nor a sense of superiority that tells. Performance alone is the test."
Capablanca
Karpov
Kasparov
Fischer

well for example a book that reuben fine wrote was called the ideas behind the chess openings. Some things he said about specific openings aren't true anymore. In the King's Indian Defence he says black has trouble getting counterplay if white plays well and white should be much better but this is not really true because black can have plenty of play, and kasparov and fischer have used it to great effect. Even from the 1980's opening theory has changed alot.
Who do think is the best player ever to play chess? Someone known.