He came second in the Gijón international tournament in 1956.His best performance is held to be the 1967 Winnipeg tournament, where he also tied for first place with Bent Larsen, whom he beat, ahead of joint Boris Spassky and Paul Keres.
He came in second at the Gijón international tournament in 1956. His most notable accomplishment is considered to be the 1967 Winnipeg tournament, where he tied for first place with Bent Larsen, whom he ultimately outperformed before Boris Spassky and Paul Keres shared the top spot.