Chess960 tournaments hosted by the Saint Louis Chess Club since 2019 are branded as "Chess 9LX", where the name is a combination of the Arabic numeral 9 and the Roman numerals LX (60). The name "Freestyle chess" has also been used by the Freestyle Chess G.O.A.T. Challenge and the Freestyle Chess Grand Slam Tour promoted by Magnus Carlsen and Jan Henric Buettner.
chess960 tournaments hosted by the saint louis chess club since 2019 are branded as "chess 9lx" where the name is a combination of the arabic numeral 9 and the roman numerals lx (60) the name "freestyle chess" has also been used by the freestyle chess goat challenge and the freestyle chess grand slam tour promoted by magnus carlsen and jan henric buettner