The offical chess set used in competions is named after who?
Howard Staunton Howard Staunton (1810 – 22 June 1874) was an English chess master who is generally regarded as having been the world's strongest player from 1843 to 1851, largely as a result of his 1843 victory over Saint-Amant. He promoted a chess set of clearly distinguishable pieces of standardised shape—the Staunton pattern promulgated by Nathaniel Cook—that is still the style required for competitions. He was the principal organiser of the first international chess tournament in 1851, which made England the world's leading chess centre and caused Adolf Anderssen to be recognised as the world's strongest player.
Interzonal Interzonal chess tournaments were tournaments organized by the World Chess Federation FIDE from the 1950s to the 1990s. They were a stage in the triennial World Chess Championship cycle and were held after the Zonal tournaments, and before the Candidates Tournament. Since 2005, the Chess World Cup has filled a similar role.