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.
Boris Katalymov Boris Nikolaevich Katalymov (Russian: Борис Николаевич Каталымов ; 13 June 1932 – 1 February 2013), also spelled Katalimov, was a Kazakh and Soviet chess International Master. The Katalymov Variation of the Sicilian Defence is named after him.