Korobov stuns top seed, takes sole lead

Grandmaster Anton Korobov of Ukraine shot into sole lead defeating top seed Radoslav Wojtaszek of Poland in the fourth round of AICF-AAI Chess Cup in Delhi on Monday. Aided by the victory, Korobov took his tally to three points out of a possible four and the Ukrainian now enjoys a full point lead over Wojtaszek, Evgeny Alekseev of Russia, Parimarjan Negi and Abhijeet Gupta, who all have two points each.

On another interesting day at AAI Institute, the other two games ended in draws. Krishnan Sasikiran yet again could not capitalise on what appeared to be a huge advantage while Negi also missed some chances to let Gupta off the hook. With six rounds still to come in the category-18 tournament, Sasikiran remains at the bottom of the tables with just one point from four games. Sasikiran has been getting nice position but so far he has not converted those into full points.

Gupta is the other player in the tournament who is yet to score a victory apart from Sasikiran and with four draws in as many games, the former world junior champion will be hoping to turn the tide in the rounds to come.

Korobov confessed he was not happy with his position out of the Petrosian system in the Queen's Indian defense. Playing white, the Ukrainian champion was on the defensive right from move 15 and it was only a blunder by the Polish Grandmaster that gave him winning chances. Soon after the first time control, Korobov spotted a tactical opportunity and went on to win a pawn. The technicalities thereafter looked easy the way Korobov played it.

Sasikiran employed the Catalan opening and the players followed theoretical lines that gives white a miniscule advantage. Alekseev, however, fought well in the middle game to keep the balance but an erroneous plan left the Russian to suffer for a long time.

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