This weekend we learn from the best! Grandmaster Melik Khachiyan starts us on a new video series, exposing us to some of the great positional and "deep thinking" principles that his first coach, former World Champion Tigran Petrosian, instilled in him. In our featured game, Petrosian turns his "positional dominance" over GM Eduard Gufeld into a Queen-side breakthrough with devastating tactical results. Nothing like some "Soviet Chess School prophylactic thinking"... Enjoy!