It has to be Magnus Carlsen, he's the highest rated player in history.
who do you think is the best chess player ever?
silly people, fighting who was/has/is the best. Fischer would have destroyed karpov, & tortured kasparov. old 'gazza' would have been so frustrated at not being his equal, (on the board you understand!), he'd would have had a sulk, as he did against deeper blue!!. i'm no great fan of carlson( unfair as it i'm not a fan because of his personality, he hasn't one..LOL) BUT COME ON GUYS BOBBY BOY WOULD HAVE SPANKED THE LOT. BUT ITS A SHAME THAT HE DIDN'T PROVE IT, JUST TO STOP THINGS LIKE THIS, HAVING TO DEBATE IT...

i think it's kasparov. after all, he was the one they chose to play against deep blue
you don't know shit about chess haah
Kasparov would kneel for Bobby Fisher

Morphy.
Morphy's genius was not solely confined to the chess board. He was a polymath, he passed the Bar exams while a teenager, he could speak 4 languages fluently.
Morphy, the by word for genius.
Pity that he never played Steinitz though.

I'm going to go with Kasparov like a lot of the other people here, have to admire the calculcated decisions!

The question is who is the best chess player and not who is fluent in which language.
lol

I wouldn't rule out Carlsen so soon, he is only 24 and look what he's achieved already
Carlsen is the best ever imo. We are priviledged to live in a time when we can see his mastery live. I wish he would play more games.

It's hard to compare players of different eras. Instead, one should compare players against their opponents.
That being said, Fischer during his run for the World Championshp helps to make him a candidate for the best ever.
6-0 vs Mark Taimanov
6-0 vs. Larsen
5 wins and 1 loss against Petrosian, in their match
7 wins and 1 loss against Spassky
These types of results haven't been seen before or since.
i think so to.even though i think kasparov is better,fischer put up stats that might never be seen again
Capablanca. The most natural player ever!
There are several reasons for me to vote Fischer. Some I shall keep to myself. But, in the strict grounds of chess, what I like of Fischer is that I consider him as the epitome of Capablanca. Fischer was as natural as Capablanca, but with a more incisive style.
Chess players in the USA use to get hot about Fischer, which is only natural. I, being from Spain, have no reason to appreciate him, but I do, because I like his mastery over chess.
BTW, his results are absolutely impressive, his 6-0 vs Larsen and Taimanov in the Candidates are a milestone in the history of Chess. But I believe those matches, as well as the subsequent matches vs Petrosian and Spassky, show results that have to do more with his psychological advantage over his opponents, than with their relative strength as chess players. Larsen was no so inferior to Fischer, he was just incapable of playing his best chess against him. Spassky, as well, played as a nerd -which he, obviously, was not.
Karpov would have not been impressed by Fischer's personality, but, IMHO, Fischer would have beaten him easily, I do not think Fischer was afraid of Karpov, as some suggest.