In 1851, the first international chess tournament was held in London and won by Adolf Anderssen. Soon after modern time control rules were adopted for competitive play. The first Official World Chess Championship was held in 1886 in the United States and won by Wilhelm Steinitz. By the 20th century, the game of Chess had developed into a professional sport with chess clubs, publications, player ratings and chess tournaments. The World Chess Federation (FIDE) was founded in 1924 in Paris.