Complex sentence: Born in Riga, he was champion of Latvia in 1955,1956,1957,1960,1961,1963,1964,1966, and also played in several Soviet Chess Championships, his best result coming in 1966, when he was equal third with 12/20.
Split into simpler sentences: Born in Riga, he was champion of Latvia in 1955,1956,1957,1960,1961,1963,1964, and 1966. He also played in several Soviet Chess Championships, his best result coming in 1966, when he was equal third with 12/20.