Dubov vs D Bocharov, 2012  (E46) Nimzo-Indian, 42 moves, 1-0 Dubov vs Potkin, 2012  (D10) Queen's Gambit Declined Slav, 26 moves, 1-0 D Frolyanov vs Dubov, 2012  (B64) Sicilian, Richter-Rauzer Attack, 68 moves, 0-1 3 games