NEW DELHI: Viswanathan Anand will have to enhance his strike-power in the next four rounds in order to emerge as a title-contender in the on-going Corus chess tournament at Wijk ann Zee, in the Netherlands.

The only five-time champion in the long history of the competition, Anand currently finds himself in the joint third spot with four others at 2.5 points from four rounds.

Azerbaijan's Teimour Radjabov leads with 3.5 points, half a point ahead of top seed Veselin Topalov. Radjabov is the only player to have won three rounds so far.

Anand is due to play Russia 's Peter Svidler, World champion Vladimir Kramnik, Radjabov and Topalov in the next four rounds. The outcomes of these crucial games might well decide the course of Anand's campaign for a sixth title.

In the past, too, Anand has picked up the momentum after slow starts. So far, Anand has not looked in any serious trouble. He is expected to accelerate his scoring once the title-race reaches the home stretch.

Negi impressive

In Group `C', Parimarjan Negi has been impressive so far. Seeded four, the 13-year-old shares the second spot at 2.5 points with four others.

Fifth round pairings:

Group `A': Anand-Svidler; Karjakin-Motylev; Shirov-Wely; Tiviakov-Topalov; Navara-Radjabov Ponomariov-Kramnik; Aronian-Carlsen.

Group `C': Kosintseva-Willemze; Krasenkow-Parimarjan;Wiel-Brynell; Berg-Spoelman; Bosboom-Yifan; Jonkman-Nepomniachtchi; Haastert-Peng.

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