Background
He was a son of Milan Vidmar, a leading Slovenian chess grandmaster.
He was a son of Milan Vidmar, a leading Slovenian chess grandmaster.
In 1942, he shared 1st with Efim Bogoljubow in Cottbus. Vidmar junior played for Yugoslavia at first reserve board (+4 –0 =2) in the 9th Chess Olympiad at Dubrovnik 1950. He was awarded the IM title in 1950.
In 1938, he tied for 9-10th in Ljubljana (Boris Kostić won, and Milan Vidmar sr shared 5th place). He tied for 2nd-3rd with his father, behind Svetozar Gligorić, at Ljubljana (Liberation) 1945/46, took 6th at Karlovy Vary / Mariánské Lázně 1948 (January Foltys won), shared 8th at Vienna 1951 (4th Schlechter Memorial, Moshe Czerniak won), and took 10th at Opatija 1953 (Aleksandar Matanović won). He won team gold medal.