Robert James "Bobby" Fischer (March 9, 1943 – January 17, 2008) was an American chess Grandmaster and the 11th World Chess Champion. He is widely considered one of the greatest chess players of all time. Fischer was also a best-selling chess author.
In 1972, he captured the World Championship from Boris Spassky of the USSR in a match widely publicized as a Cold War confrontation. The match, held in Reykjavík, Iceland, attracted more worldwide interest than any chess match before or since. In 1975, Fischer declined to defend his title when he could not reach agreement with FIDE over the conditions for the match. He became more reclusive and did not play competitive chess again until 1992, when he won an unofficial rematch against Spassky. The competition was held in Yugoslavia, which was then under a United Nations embargo. This led to a conflict with the U.S. government, which was also seeking income tax from Fischer on his match winnings. Fischer never returned to his native country. After ending his competitive career, he proposed a new variant of chess and a modified chess timing system. His idea of adding a time increment after each move is now standard, and his variant Chess960 is gaining in popularity.