Bengaluru, Aug. 13 -- R Praggnanandhaa took down World Championship challenger Javokhir Sindarov in the second round of the Sinquefield Cup. In a game that lasted six hours and 95 moves, Pragg, playing White, kept up the pressure, before Sindarov blundered on move 82 and Pragg didn't let the opportunity slip. The 21-year-old Indian grandmaster, who won Norway Chess in June and the Saint Louis Rapid and Blitz last week, appears to be in fine form with titles across formats. Praggnanandhaa and Sindarov have been duelling since their junior years, with their rivalry gaining a fresh dimension at the Candidates tournament earlier this year. Praggnanandhaa lost both his games against the Uzbek GM at the Candidates, which Sindarov later described ...