Tigran Petrosian (June 17, 1929 - August 13,1984) was a former World Chess Champion. He is often known by the Russian version of his name, Tigran Vartanovich Petrosian. He was nicknamed "Iron Tigran" due to his playing style because of his almost impenetrable defence, which emphasised safety above all else Wikipedia
The definitive Wikipedia entry for Tigran Petrosian. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Tigran_Petrosian
A Brief Biography Tigran Vartanovich Petrosian was born in T'bilisi , capital of the former Soviet republic of Georgia , on June 17, 1929, and died in Moscow on August 13, 1984. www.tim-thompson.com/petrosian.html