In which country the game chess was invented?
As for as I know it was started in India around 5000 B.C. at the time of MAHABHARATA. A war between Kawrawa and Pandawa.
The earliest ancestors of the game originated in India, which was before the 6th century AD. The history of chess spans some 1500 years and you can find out more details on http://en.wikipedia.org/wiki/History_of_chess.
the earliest version of chess came from India