Kortchnoi Memorial Zurich Chess Challenge and Kortchnoi Memorial Open at Easter time from April 13th to 17th, 2017 in Zurich - Rapid & Blitz combined Invitation plus an Open tournament:
http://www.zurich-cc.com/en/ (Grandmaster Tournament)
Tournaments and series of international importance, Candidates 1953 (with Neuhausen SH), Weihnachtsopen (ex Nova Park) since 1977, CS-Masters Horgen 1994 & 1995, Zurich Chess Challenge since 2012.
PFÄFFIKON 2008 – 2015, Swiss Rapid Chess Masters and FHCC
A one-day rapid event, played in the Casino Seedamm Plaza at Pfäffikon.
Stars like Bacrot, Caruana, Jussupow, Korchnoi, Ponomariov, Vallejo Pons, Volokitin, mixed with amateur and club players!
LIECHTENSTEIN OPEN 1983 – 2014 (32 editions)
Launched in 1983 with Viktor Korchnoi up to Nona Gaprindashvili in 2014, Liechtenstein had been host for thousands of chess players from over 50 countries. Renowned Pete Doggers reports from his play.