He was a member of the Smyslov school and gained the titles of World Youth Champion at U16 and U18 levels. In the PCA-World Championships, he reached the candidates' matches in 1994. Since 1997 Tiviakov has been living in Groningen and he became a citizen of the Netherlands. He won the European Teams Championships in both 2001 and 2005 and was victorious in the championship of the Netherlands in 2006 and 2007. Tiviakov won the Individual European Championship 2008.