Harika now has 2.5 points with two wins, one draw and one loss in this elite tournament that has almost all the top players in the world in fray.
"It was a complex game," said Harika after her victory, clearly sounding happy to return to winning ways.
"But I turned it in my favour. I am happy with the way it turned out," she added.
Harika next faces Scotland's GM Ketevan Arakhamia-Grant (2376) in Round 5. Grant comes into the clash with 2.5 points herself. She drew with Germany's GM Jan-Christian Schroeder in the fourth round.
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