who is the best chess player of all time?

garry kasparov ?,bobby fisher?capablanca?

It is I.

of all time? We can't know that until time comes to an end.

However, I think Fischer is best but I don't think you can compare. The conditions were different in each period. So how do you compare? Would they play "as they are" with the knowledge they had at the time they were the greatest. Or do we give them the same conditions with access to computers and the same knowledge? This is why I really don't think it makes sense to discuss this matter. They were the best of their time and this made them great. Isn't that enough?

Emmanuel Lasker

Lasker was not dominating the chess scene like Capablanca or Alekhine. He almost lost his title to Schlechter and never bothered to challenge Pillsbury (his greatest rival).

Most would call a 27 year reign dominating. By Alekhine Lasker was called the ultimate tournament player in his book covering the tournament in New York 1924 where Lasker won 1.5 points ahead of the world champion, Capablanca. His endgame was unmatched by his contemporaries. Take a look at the tournaments he entered and then tell me that he wasn't dominating the scene. 

Of course if you mean that he didn't play that often, then yes. He was an academic man. At the time living off chess was close to impossible. Actually he was playing chess for food and money in his youth. No doubt this spawned his eagerness to find other means of living. 

I once had a book about Lasker's life and Lasker was no doubt an amazing man. I just love this game where Lasker needed the win and people there for were expecting a wild game. Instead Lasker traded off queens early and entered an endgame which he won. Seeing this game the first time blew my mind.

Capablanca never even finished ahead of Lasker in a tournament until 1936.  15 years after their match, which of course Capablanca did win.  So who's better?  For me I'll say Lasker.  And of all time?  Again I'll say Lasker.  

I would say Fischer.

My vote goes to our own Chess.com's beloved and super-honest Syed Fahad. After playing chess for only a few weeks, he managed to draw Rybka in a game that Magnus Carlsen can only dream of playing!!!!!!!!! The game is utterly devoid of any tactical mistakes!!!!!!!!! Syed claims he actually played this game; Why should anyone doubt him?!?!?!?!?

Bobby Fischer, end of argument.

If we talk the most talented chess player ever, Fischer is in for the count together with Kasparov and Capablanca and possibly Magnus Carlsen. If we talk about the player with the best results then I would say Kasparov and Lasker. Fischers ended at the top and had he continued to play he might have been up there with Kasparov, but he did not, he ended his career as soon as he became World Champion. And would he have beaten Karpov in 1975? I am not sure at all.

do you believe that EscherehcsE

I believe it more then i would believe that houdini cant analyse a Carlsen position.

Gee, I thought I'd added plenty of sarcasm, but I guess not. You guys are a tough crowd.

Tal and Radjabov are my favorites. 

The best chess player isn't even human, lol! 

In the New York 1924 tournament Lasker did not score a single win against Capablanca.

He is great, but he is nowhere near the greatest.

He quit too early, so we can't judge.

Josh Waitzkin is the greatest. There is even a movie about him!

Between other things, I seriously doubt Rybka would play 44...c3 ? or 49...Qb4 (?) (->49...Qxa4)

Rather than guessing, it's easy enough to determine. Just fire up Rybka and find out. You might be surprised.

Note that on move 49, it flip-flops between ...Qb4 and ...Qc7. You'd have to set it on multi-PV to see how close the evals really are.