After crushing Francisco Vallejo Pons of Spain in the fourth round, Anand cemented his position at the top, taking his tally to an unassailable 11 points.
For a clear victory, the Indian ace is just a draw away in the final round.
Levon Aronian of Armenia remained within striking distance of Anand, following another draw with Vallejo Pons in the fifth round and took his tally to eight points.
The last round will be crucial for Anand when he takes on Aronian who will have the advantage of playing white. The Armenian desperately needs a victory to level scores with Anand while a draw will take Anand to a clear first.
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If it comes, this will be Anand's second biggest tournament victory of the year after the Indian won the Candidates Tournament to earn the right to challenge Magnus Carlsen in the World Championships Match.
The three victories thus far will also certainly serve as a morale booster for the match against Carlsen to be played in November.