Answer:
the city of Chicago, 2014 - Setting
a boy and a man, both ambitious - Characters
rivals in a dangerous game - Conflict
Explanation:
Setting, in literature refers to a place, time and period a particular event/incident occurred. It can also mean weather and details of the environment where the story took place.
The phrase "the city of Chicago, 2014" refers to Setting.
In literature, Character refer to a person, animal, creature or thing that helps develop and advance a plot.
The phrase, "a boy and a man, both ambitious" are the Characters here.
Conflict in literature simply refers to the drives or forces within a character or between characters. It can be external or internal conflict.
The phrase, "rivals in a dangerous game" is the Conflict onging.