A total of 142 players from 12 countries participated in the main tournament, while the stage of the Russian Youth Cup has gathered as many as 329 young players.
After defeating Andrey Esipenko in the final round, Tabatabaei won the event.
The Iranian grandmaster, who had started off with a loss, went on to score 7.5 out of 9 points, winning three games in a row at the home stretch.
Andrey Esipenko (Russia), Nodirbek Yakubboev (Uzbekistan), Haik Martirosyan (Armenia), and Denis Lazavik (Belarus) scored 6.5 points apiece respectively. Bibisara Assaubayeva (Kazakhstan) achieved the best result among female players with 5.5 points.