IBM international chess tournament

The IBM international chess tournament was a series of very strong chess tournaments held in the Amsterdam, The Netherlands from 1961 to 1981, and was sponsored by IBM. The list of winners of the main group includes five world champions.

IBM international chess tournament

The IBM international chess tournament was a series of very strong chess tournaments held in the Amsterdam, The Netherlands from 1961 to 1981, and was sponsored by IBM. The list of winners of the main group includes five world champions.