24 Dec 13
According to a tweet or partial tweet shown in a short list on
http://www.pogonina.com/index.php?option=com_content&task=view&id=2287&Itemid=1
82-year old Viktor Korchnoi is returning to chess. I guess, this is the same Korchnoi that once in his lifetime asked a castling legality question during a game and went on to win. Check out the Chess Forum posts by ChessPraxis, greenpawn34, and others shown in
http://www.redhotpawn.com/board/showthread.php?subject=Castling_Legality&threadid=157039
To read more on the situation go to:
http://www.chessvibes.com/viktor-korchnoi-to-return-to-the-chess-board