Schachfestival Basel (ex Hilton Open) since 1999
In 1986, the city of Basel organised a training match between the reigning World Chess Champion Garry Kasparov and Anthony Miles, the first English born otb Grandmaster.
Great Gazza, the monster with thousand eyes, won by 5.5 to 0.5.
Later, in 1999, an annual open tournament series started in Basel (since 2016 held in Riehen, a municipality near Basel):
Korchnoi, Ivkov, Andersson, Hort, Jussupow, Suetin, Tukmakov, Bologan, Bacrot, Naiditsch, Milov, Vachier-Lagrave, Wojtaszek, Rapport, Solak, Safarli, or Habu all played at Basel.
Record tournament winner is Andrei Sokolov, today rather forgotten, in his heydays he was a Top-Five ranked player in the world.
Albo d'Oro Basel Chess Festival, Open
1999 A. Sokolov (1st edition)
2000 A. Sokolov
2005 A. Sokolov
2009 A. Sokolov
2018 Chatalbashev (20th edition)
Official site: http://www.skbirseck.ch/schachfestival-basel