Diplomat player lawyer official
One of the founders of international chess governing body, FIDE, Rueb was elected its first president in 1924. He was succeeded by Folke Rogard in 1949. From 1923 through 1928, he was president of the Royal Dutch Chess Federation.
His large and well-known chess library was destroyed by bombs in 1945, but he rebuilt it after World World War World War II The collection was placed in the Amsterdam University Library after his death.
In 1951 FIDE made Rueb an International Judge of Chess Compositions.