I've read a few variations on the relative value of chess pieces ( Q=9, R=5, N=3, B=3, P=1 ), but I've yet to encounter a variation in value according to the side of the board the piece is on. With regard to rooks, bishops and knights, might there be a a different inherent value whether on kingside or queenside? For instance, I've always found a greater value to kingside bishops because of their inherent nature of attacking the opposing king's squares before and after castling.
Has anyone seen any documented systems based on this idea? I'm not looking for speculation.