Boris Vasilievich Spassky 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.
Mikhail Nekhemyevich Tal was a Soviet and Latvian chess player and the eighth World Chess Champion. He is considered a creative genius and is widely regarded as one of the most influential players in chess history. Tal played in an attacking and daring combinatorial style. His play was known above all for improvisation and unpredictability. Vladislav Zubok said of him, "Every game for him was as inimitable and invaluable as a poem".
Leonid Zakharovych Stein was a Soviet chess Grandmaster from Ukraine. He won three USSR Chess Championships in the 1960s, and was among the world's top ten players during that era.
Jørgen Bent Larsen was a Danish chess grandmaster and author. Known for his imaginative and unorthodox style of play, he was the second-strongest non-Soviet player, behind only Bobby Fischer, for much of the 1960s and 1970s. He is considered to be the strongest player born in Denmark and the strongest from Scandinavia until the emergence of Magnus Carlsen.
Robert Eugene Byrne was an American chess player and chess author who held the FIDE title of Grandmaster (GM). He won the U.S. Championship in 1972, and was a World Chess Championship Candidate in 1974. Byrne represented the United States nine times in Chess Olympiads from 1952 to 1976 and won seven medals. He was the chess columnist from 1972 to 2006 for The New York Times, which ran his final column on November 12, 2006. Byrne worked as a university professor for many years, before becoming a chess professional in the early 1970s.
Aivars Gipslis was a Latvian chess player, writer, editor and coach, who held the FIDE title of Grandmaster and the ICCF title of Correspondence Chess Grandmaster.
Efim Petrovich Geller was a Soviet chess player and world-class grandmaster at his peak. He won the Soviet Championship twice and was a Candidate for the World Championship on six occasions. He won four Ukrainian SSR Championship titles and shared first in the 1991 World Seniors' Championship, winning the title outright in 1992. His wife Oksana was a ballet dancer while his son Alexander was also a chess master. Geller was coach to World Champions Boris Spassky and Anatoly Karpov. He was also an author.
Lajos Portisch is a Hungarian chess Grandmaster, whose positional style earned him the nickname, the "Hungarian Botvinnik". One of the strongest non-Soviet players from the early 1960s into the late 1980s, he participated in twelve consecutive Interzonals from 1962 through 1993, qualifying for the World Chess Championship Candidates Cycle a total of eight times. Portisch set several all-time records in Chess Olympiads. In Hungarian Chess Championships, he either shared the title or won it outright a total of eight times. He won many strong international tournaments during his career. In 2004, Portisch was awarded the title of 'Nemzet Sportolója', Hungary's highest national sports achievement award.
Vladimir Andreyevich Savon was a Ukrainian chess player. He was awarded the title of Grandmaster by FIDE in 1973.
Vlastimil Hort is a Czechoslovak and later German chess Grandmaster. During the 1960s and 1970s he was one of the world's strongest players and reached the 1977–78 Candidates Tournament for the World Chess Championship, but never qualified for a competition for the actual title.
Milan Matulović was a chess grandmaster who was the second or third strongest Yugoslav player for much of the 1960s and 1970s behind Svetozar Gligorić and possibly Borislav Ivkov. He was primarily active before 1977, but remained an occasional tournament competitor until 2006.
Lev Abramovich Polugaevsky was a Soviet chess player. He was awarded the title of International Grandmaster by FIDE in 1962 and was a frequent contender for the World Championship, although he never achieved that title. He was one of the strongest players in the world from the early 1960s until the late 1980s, as well as a distinguished author and opening theorist whose contributions in this field remain important to the present day.
Borislav Ivkov was a Serbian chess Grandmaster. He was a World championship candidate in 1965, and played in four more Interzonal tournaments, in 1967, 1970, 1973, and 1979.
Vladimir Borisovich Tukmakov is a Ukrainian chess grandmaster. He gained the Grandmaster title in 1972.
Peter Biyiasas is a Canadian chess grandmaster. He was Canadian champion in 1972 and 1975, represented Canada with success on four Olympiad teams, and played in two Interzonals. He moved to the United States in 1979, settling in California. He retired from competitive play in the mid-1980s to work as a computer programmer. During the late 1970s and early 1980s, he was a frequent training partner of Bobby Fischer, who stayed at his home in San Francisco for extended periods.
Igor Platonov was a Soviet Ukrainian chess player. He was active between 1958 and 1984, with his best years from 1967 to 1972, when he earned the title of Grandmaster of the Soviet Union. He was the only player to obtain the Title of Soviet Grandmaster not to obtain the International Grandmaster title. Top tournament results included a tie for first in the Kiev Championship of 1963, a tied 3rd-4th place in the very strong 1964 Trade Union Championship, a tied 7th-9th place in the 1969 Soviet Zonal at Moscow, and 2nd place in the José Raúl Capablanca Memorial tournament, Cienfuegos 1972. He played in five straight Soviet finals from 1967 to 1971. After his active career, he became a chess trainer.
Viktor Lvovich Korchnoi was a Soviet and Swiss chess grandmaster (GM) and chess writer. He is considered one of the strongest players never to have become World Chess Champion.
