I believe that the reason why Fischer is undervalued as a chess player is because he simply didn't play in tournaments and championships as often as Kasparov. But the fact that Kasparov did more great things than Fischer does not make him a better player
Since the two didn't play each other, the only way we have to judge who was the better player is to compare their achievements, and for me 20+ years of excellence at the highest level far and away trumps Fischer's stop-start-stop career...there's just not enough data
Nobody undervalues Fischer as a chess player. If anything, people undervalue Kasparov...his rise was no less mercurial than Fischer's, and once at the top he proved he had what it took to stay there
Also, there's some Korean guy with an IQ over 200. Is he a better chess player than both Kasparov and Fischer?
Before anyone else posts it; yes, we need another one of these threads. The 3 dozen or so already out there are simply not enough.
Like a lot of folks, I used to believe that Kasparov was the greatest player of all time. After all, when he hit the scene, it was a revolution in the chess world. He stayed on top for 20 years, holding the world championship title for 15. When computer programs started to play better and better chess, Kasparov was the one that everyone wanted to stand up and fight back. His contributions to chess on and off the board are astronomical, and he would appear in the top 5 list of any rational human being with even the slightest knowledge of chess. He has been my idol for years, and still is to this day.
However... after watching the new documentary about Fischer and reading Endgame, his new biography, a few months ago, my perspective has changed somewhat. Is there really a solid argument that Kasparov was the better player? Fischer's many acheivements including winning the US Champion title at 14, winning 20 straight games (including destroying Taimanov and Larsen 6-0 in the candidates matches), and doing it all as an American against a Soviet-dominated system seems to be more of a feat than anything Kasparov's ever done. And his claims that he learned by himself are, for the most part, valid. Yes, he learned from other people's games, but he didn't have access to anywhere near the resources that the Soviets had in terms of teachers. This is a man who spent so much time playing chess that he never even learned basic social graces. Kasparov inarguably did not have that level of dedication. Plus, you throw in the fact that Fischer's IQ was about 40 points higher, and at least for me, I'm convinced that Fischer was considerably better.
I believe that the reason why Fischer is undervalued as a chess player is because he simply didn't play in tournaments and championships as often as Kasparov. But the fact that Kasparov did more great things than Fischer does not make him a better player; it is possible (although improbably) this day in age for someone to become the greatest player of all time without ever playing a single rated game.
Thoughts?