GM Magnus Carlsen
In a Time magazine article dated Dec. 25, 2009, Magnus Carlsen is quoted as saying "I don't use a board when I am studying on my own. People come over to my house and say, 'You must have a lot of chess sets.' I say, 'Well, we might have one somewhere, but I’m not sure.'"
The article also contains a link to a 1970s Time article about the psychology of chess.