Chess right of a deposed champion to a rematch, and the next champion, Armenian Tigran Petrosian, a player renowned for his defensive and positional skills, held the title for two cycles, 1963–1969. His successor, Boris Spassky from Russia (champion 1969–1972), won games in both positional and sharp tactical style. The next championship, the so-called Match of the Century, saw the first non-Soviet challenger since World War II, American Bobby Fischer, who defeated his Candidates opponents by unheard-of margins and clearly won the world championship match. In 1975, however, Fischer refused to defend his title against Soviet Anatoly Karpov when FIDE did
Bobby Fischer Teaches Chess Bobby Fischer Teaches Chess Bobby Fischer Teaches Chess is a chess puzzle book written by Bobby Fischer and co-authored by Stuart Margulies and Don Mosenfelder, originally published in 1966. It is believed to be the best-selling chess book of all time, with over one million copies sold. The book is intended for beginners and uses a programmed learning approach, permitting readers to go back and retry each question if they give a wrong answer. Unusually for a modern chess book, it requires no knowledge of chess notation, using only diagrams with arrows and verbal descriptions of chess moves such as