New York Times:
Mr. Fischer was the most powerful American player in history, and the most enigmatic. After scaling the heights of fame, he all but dropped out of chess, losing money and friends and living under self-imposed exile in Budapest, Japan, possibly in the Philippines and Switzerland, and finally in Iceland, moving there in 2005 and becoming a citizen.
When he emerged now and then, it was sometimes on the radio, ranting in increasingly belligerent terms against the United States and Jews. His rationality was questioned.