He was a game playing machine! World class chess, backgammon, and poker player.

I watched him play when I went to the U.S. chess Open in 1978. He drew crowds and was fun to watch, often getting in time trouble.

Until recently, "machine" would be an insult to a chess grandmaster :-)

not really: Capablanca's nick name was "The Chess machine" http://www.chess.com/article/view/when-the-chess-machine-was...

One of the favourite books in my chess library is "Learn from the Grandmasters" edited by Raymond Keene (before he became a serial plagiarist). A dazzling line up of GMs contributed two annotated games, one of their own plus another game they considered particularly inspiring or instructive. Characteristically, Walter Browne (alone) contributed two of his own games, both wins.

Sorry to hear this. Condolences and best wishes