IBM international
The IBM international chess tournament was a series of very strong chess tournaments held in the Amsterdam, Netherlands from 1961 to 1981, and was sponsored by IBM. The list of winners of the main group includes five world champions.
| Tournament | Year | Location | Winner(s) |
|---|---|---|---|
| IBM international chess tournament | 1981 | Amsterdam (Netherlands) |
Jan Timman
|
| IBM international chess tournament | 1980 | Amsterdam (Netherlands) |
Anatoly Karpov
|
| IBM international chess tournament | 1979 | Amsterdam (Netherlands) |
Vlastimil Hort
Gyula Sax |
| IBM international chess tournament | 1978 | Amsterdam (Netherlands) |
Jan Timman
|
| IBM international chess tournament | 1977 | Amsterdam (Netherlands) |
Anthony J Miles
|
| IBM international chess tournament | 1976 | Amsterdam (Netherlands) |
Viktor Korchnoi
Anthony J Miles |
| IBM international chess tournament | 1975 | Amsterdam (Netherlands) |
Ljubomir Ljubojevic
|
| IBM international chess tournament | 1974 | Amsterdam (Netherlands) |
Vlastimil Jansa
Vladimir Tukmanov Borislav Ivkov |
| IBM international chess tournament | 1973 | Amsterdam (Netherlands) |
Tigran V Petrosian
Albin Planinc |
| IBM international chess tournament | 1972 | Amsterdam (Netherlands) |
Lev Polugaevsky
|
| IBM international chess tournament | 1971 | Amsterdam (Netherlands) |
Vassily Smyslov
|
| IBM international chess tournament | 1970 | Amsterdam (Netherlands) |
Boris Spassky
Lev Polugaevsky |
| IBM international chess tournament | 1969 | Amsterdam (Netherlands) |
Lajos Portisch
|
| IBM international chess tournament | 1968 | Amsterdam (Netherlands) |
Lubomir Kavalek
|
| IBM international chess tournament | 1967 | Amsterdam (Netherlands) |
Lajos Portisch
|
| IBM international chess tournament | 1966 | Amsterdam (Netherlands) |
Mikhail Botvinnik
|
| IBM international chess tournament | 1965 | Amsterdam (Netherlands) |
Jan Hein Donner
|
| IBM international chess tournament | 1964 | Amsterdam (Netherlands) |
Bent Larsen
|
| IBM international chess tournament | 1963 | Amsterdam (Netherlands) |
Lajos Portisch
|
| IBM international chess tournament | 1962 | Amsterdam (Netherlands) |
Moshe Czerniak
Hiong Liong Tan |
| IBM international chess tournament | 1961 | Amsterdam (Netherlands) |
Christian Langeweg
|