This year Tigran Petrosian would have celebrated his 90th birthday. The Armenian grandmaster and world champion was noted for the profundity and originality of his strategic concepts, as well as his quasi-invincibility in high level contests. He was certainly my role model when I was a student of chess in my teens, a chess hero to emulate along with Aron Nimzowitsch, Richard Reti, Alexander Alekhine and Mikhail Botvinnik.