Grandmaster Anton Korobov of Ukraine stayed in sole lead following a draw with Parimarjan Negi in the fifth round of AICF-AAI Cup 2012 here at AAI Officers Institute.
On what turned out to be another hard fought day, Russian Evgeny Alekseev capitalized on a optical blunder and went on to beat former world junior champion Abhijeet Gupta while top seed Radoslav Wojtaszek of Poland played out a draw with Indian Krishnan Sasikiran.
At the half way stage in the category-18 six-player double round-robin tournament, Korobov still enjoys the cushion of a half point over Alekseev. The Ukrainian with 3.5 points has three white games to come in the remaining five matches and has now emerged as a firm favourite for the crown.
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