Chess organizations can be as small as local as the elementary school chess club and as worldwide as FIDE (World Chess Federation) or ACP (Association of Chess Professionals). Chess organizations arrange chess tournaments, regulate chess players' rating system, often publish chess books and magazines and basically govern the mental sports within their jurisdictions. What more can a chess organization do? What are the most important chess organizations in the world? And in which controversies these organizations where involved? Check out our selection of chess organizations articles to find out.