Marion Tinsley is considered the greatest checkers player who ever lived. He was world champion from 1955–1958 and 1975–1991. Tinsley never lost a World Championship match, and only lost nine games (two of them to the Chinook computer program) in his entire 45 year career. He withdrew from championship play during the years 1958–1975, relinquishing the title during that time. Tinsley retired from championship play in 1991. Wikipedia
Marion Tinsley is the greatest checkers player in the history of the game. He was recognized as the World Champion in 1954 and since that time has lost only 9 games. Dr. Tinsley has been awarded the title of World Champion Emeritus in honor of his decis www.cs.ualberta.ca/~chinook/people/Tinsley.php
The definitive Wikipedia entry for Marion Tinsley. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Marion_Tinsley
