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The first Vidmar Memorial was held in 2–20 June 1969 in Ljubljana as an international invitation tournament: Albin Planinc emerged as sensational winner.
The event in 1995 at Ptuj was a Zonal Tournament, with Stefan Kindermann who did win, Viktor Korchnoi, and Thomas Luther earning a spot in a round robin of players from Germany, Austria, Switzerland, and Slovenia to advance (due to the split of FIDE in 1993, the World Chess Championship cycles collapsed and it turned out that there were no longer Interzonals to be held).
From 2007 (17th edition, ten players from Slovenia) to 2011 (19th edition), the Vidmar Memorial claim was occasionally, but not regularly used for the National Chess Championship of Slovenia.
In 2016, the jubilee Vidmar Memorial XX is organised again as an international invitation tournament.
# Year City Winner 1 1969 Ljubljana Albin Planinc (Yugoslavia) 2 1973 Ljubljana, Portorož Lajos Portisch (Hungary) 3 1975 Portorož, Ljubljana Anatoly Karpov (Soviet Union) 4 1977 Ljubljana, Portorož Bent Larsen (Denmark) 5 1979 Bled, Portorož Jan Timman (Netherlands) 6 1985 Portorož, Ljubljana Lajos Portisch (Hungary),
Zoltán Ribli (Hungary),
Anthony Miles (England)
7 1987 Portorož, Ljubljana Ivan Sokolov (Yugoslavia),
Uwe Boensch (East Germany)
8 1989 Ljubljana, Rogaška Slatina Predrag Nikolić (Yugoslavia) 9 1991 Bled, Rogaška Slatina Predrag Nikolić (Yugoslavia) 10 1993 Portorož, Rogaška Slatina Ivan Sokolov (Bosnia and Herzegovina) 11 1995 Ptuj (Zonal) Stefan Kindermann (Germany) 12 1997 Portorož Vadim Zviagintsev (Russia) 13 1999 Portorož Alexander Beliavsky (Slovenia) 14 2001 Portorož Alexander Beliavsky (Slovenia) 15 2003 Portorož Alexander Beliavsky (Slovenia),
Emil Sutovsky (Israel)
16 2005 Portorož Alexander Beliavsky (Slovenia) 17 2007 Ljubljana
Duško Pavasovič (Slovenia) 18 2009 Otočec
Luka Lenič (Slovenia) 19 2011 Ljubljana
Alexander Beliavsky (Slovenia) 20 2016 Bled Andrei Volokitin (Ukraine)