Boris Vasilievich Spassky (Russian: Бори́с Васи́льевич Спа́сский, tr. Borís Vasíl'yevich Spásskiy; born January 30, 1937) is a Russian chess grandmaster who was the tenth World Chess Champion, holding the title from 1969 to 1972. Spassky played three world championship matches: he lost to Tigran Petrosian in 1966; defeated Petrosian in 1969 to become world champion; then lost to Bobby Fischer in a famous match in 1972.