Chess
Most scholars agree that chess originated in India in the sixth century as chaturanga, a military-style strategy game. Web chess historians refer to the authoritative, out-of-print A History of Chess, written by noted board-game expert H.J.R. Murray in 1913. An alternate theory claims that China is the true birthplace of chess. A widely circulated essay by Sam Sloan makes compelling historical, archaeological, and linguistic arguments for this viewpoint. Despite its obscure origins, we do know that the game of chess thrived in Asia for centuries and has spread in popularity throughout the world.
Anna Levina 2000 U.S. Championship participant I'm just used to concentrating hard. I try to conserve time that way, to see what my opponent is going to do, so I can make my move."