Career
He has American citizenship and is currently registered with the United States Chess Federation who lists him as one of their top players. He has been listed seven times on the FIDE top 100 chess players in the world. Through his teaching of chess theory he has helped hundreds of chess students in Ukraine and the United States, including International Masters Irina Krush and Alex Lenderman.
In Ukraine, during 1988, he taught the under 21 team with International Master Igor Foygel.