Gets the UCI notation of the move.

        *chess960* defaults to the mode of the board. Pass ``True`` to force
        Chess960 mode.

def uci(self, move: Move, *, chess960: Optional[bool] = None) -> str:
        """
        Gets the UCI notation of the move.

        *chess960* defaults to the mode of the board. Pass ``True`` to force
        Chess960 mode.
        """
        if chess960 is None:
            chess960 = self.chess960

        move = self._to_chess960(move)
        move = self._from_chess960(chess960, move.from_square, move.to_square, move.promotion, move.drop)
        return move.uci()