Chess has been played in Armenia since the early Middle Ages; however, it was institutionalized during the early Soviet period. Highly popular in Armenia today, chess gained widespread recognition during the 1960s, when Soviet Armenian grandmaster Tigran Petrosian became the World Chess Champion. A country of about three million people, Armenia is considered one of the strongest chess nations today, and a chess superpower. Among countries, Armenia has one of the most chess grandmasters per capita.