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The Sinquefield Cup is an annual chess tournament that takes place in St. Louis, Missouri, United States. It is one of the most prestigious chess tournaments in the world and has been held since 2013. The tournament is named after its sponsor, Rex Sinquefield, a wealthy businessman and chess enthusiast. The 2014 Sinquefield Cup was won by Fabiano Caruana of the United States, who defeated Hikaru Nakamura in the final.