Send chess960 castling as O-O-O

[abahm]

FischerRandom castling: O-O, O-O-O (oh, not zero)

[abahm]

Another option for writing the castling move is given by the UCI protocol... "Castling is different in Chess960 and the white king move when castling short is not always e1g1. A king move could both be the castling king move or just a normal king move. This is why castling moves are sent in the form king "takes" his own rook. Example: e1h1 for the white short castle move in the normal chess start position."