Thad: Nothing as long as you remember White's left is Black's right. I think the naming of the Kingside and Queenside predates the notation and was the traditional way to describe it. If you have books old enough it will say Queenside castles or just castles if there's no ambiguity, instead of using the zeroes.

Since Embassy Chess is mirrored like regular Chess it is probably preferable to emulate describing like things in each game in a similiar way. Kingside and Queenside will work just fine too, but I think some people would rather not call them that seeing how the King and Queen are on the same half of the board. Hence other names being thought up. It sounds like Reinhard has heard of people that already deal with this issue in other large board Chess games that have castling or notation of a like kind. I think I'll stick with royalside or courtside and name the square if there's a doubt. Seeing how I just play on this site and the notation is not something I have to deal with at the moment, it doesn't matter all that much. I brought the matter up for those that might play off line or who write their moves down and take them to show someone away from the computer. I'll also have to keep the M and C straight if I do want to write a game down, least ways until Fencer changes it over.