Playing white, Bersamina stunned second seed GM Tsegmed Batchuluun of host Mongolia in 52 moves of Panno Variations of Fianchetto King's Indian encounter to hike his tally to 2 points after an opening-round win over the weekend.
Most of the leaders drew with each other in the final round but in the decisive games Iturrizaga used the Queen's Fianchetto defence to checkmate Manuel Petrosyan of Armenia in a marathon 93 moves while Jumabayev used the Queen's Gambit Declined to beat IM Amin Tabatabaei of Iran in 52 moves.
Playing aggressively with white, So prevailed in 48 moves of a King's Fianchetto to raise his total to 4.0 points and pad his live Elo rating to 2819.4, the seventh highest ever in history.
4 Nc3 e5 5 e4 Nbd7 This is a cunning option-preserving system so that he can await events before deciding whether to fianchetto his KB or develop it on e7.
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