New Delhi: Grandmaster Diptayan Ghosh caused the biggest upset of the World Chess Cup, ousting former world championship challenger Ian Nepomniachtchi of Russia after winning the second game of the second round in Goa on Wednesday.

In what was simply a one-sided affair, Ghosh did not give any chance to Nepomniachtchi, who was rather erratic with his white pieces. The opening gave Ghosh an unclear position early, and Nepomniachtchi missed a simple tactic........

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