Grandmaster Varuzhan Akobian teaches the kids a good defense against 1. d4, the Nimzo-Indian. Three branches are explored: the Classical Variation, the Rubinstein System, and the Kmoch Variation.
E36 Nimzo-Indian, classical, Noa variation, 5.a3
Gregory Kaidanov vs Varuzhan Akobian, US Championship (2012): E55 Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation
E25 Nimzo-Indian, Saemisch variation