Sam Trenholme wrote on Fri, Jan 25, 2008 04:48 PM UTC:
For my own Schoolbook chess, which supports free castling, I just notate a castling move as the square the king moves to; for example, Kc1. Where the rook moves to is determined by where the king moves to, and the only time the king can move more than one square is when he castles, so this notation is unambiguous.
- Sam