 He is one of the coaches of the Russian women's national chess team.Riazantsev won the World Youth Chess Championship in the U12 section in 1997, and the European Youth Chess Championship in the U14 division in 1998.In 2005, he won the Stork Young Masters tournament in Hengelo on tiebreak from Andrey Zhigalko, Vladimir Belov and David Baramidze.