Factual error: Throughout the movie, scenes of the chess tournament room show the American flag incorrectly vertically hung (stars on blue upper left is proper), while the Soviet flag is correctly vertically hung. No real American vs. Soviet tournament would make that mistake.
Factual error: The Cadillac that stalks Professor Joshua Mansky at the beginning of the movie when he gets in the bar has a license plate (517-UCE) with a number format and design not compatible with the time period, the 70s at earliest. The movie is set in 1962. (00:03:30)
