Romanian Grandmaster (1978) living in Spain. A mathematician and computer analyst by profession and coach. World Senior Champion in 2008 and European Senior Champion in 2011.
In 1972 and 1973 Suba won the Youth Championship of Romania and in 1980, 1981 and 1986 he became the National Champion. A participant in the Candidates matches and in the Zonals of Beil-Erkulan in 1982 where he was equal second; in Prague 1985 he shared the first-third places with Jansa and Pinter and in Warsaw 1987 where he finished fifth. In the Interzonals, he was third in Las Palmas 1982 behind Zoltan Ribli and Vasily Smyslov and shared tenth-twelfth in Tunis in 1985. Suba won or shared first in Bankja 1977, Pernik 1978, Almeria 1979, Sokol 1980, Valtoran 1981 and 1984, Narbonne 1981, Dortmund 1983, Berlin and Bela Crkva 1985, Beer Sheba 1986, Timisoara 1987. Suba participated in Olympiads between 1978 and 1986.
In 1988 Suba moved to England because of the political events in Romania and even played in the 1989 European Team Championship as a member of the English team. After this event, he limited his participation in chess events to retain his professional skills at the university. In the mid-1990s, he finally settled in Spain where he still playing and coaching.
His best chess achievement came at the age of 61 when he won the World Senior Championship title with Larry Kaufman.
Șuba is the author of Dynamic Chess Strategy (1991) and The Hedgehog (2000).
Peak rating: 2542 in 1983.