Just read about chessboxing tournaments: A round of chess alternates with a round of boxing. Started in Germany.
It seems likely that some good shots to the head would interfere with one's concentration. As a psychologist, I delight in the way that chess lends itself to all kinds of mind games. I also enjoy the elegance of a good game -- win or lose. There is a parallel to boxing with deceptive feints preceding a crashing blow. I can't think of any game that is as beguiling as chess.
Tournament Entry Rating is calculated by the formula (CurrentRating + HighestRating) / 2. The entry rating will never drop to more than 100 points below your Highest Rating.
Rated stats are updated within 24 hours of the last completed rated game.
Last move 4720 days 22 hours and 55 minutes ago 
Expand