Narrative theory:

Gerie's game...

Character roles:
The hero: Gerie. The protagonist who seeks to win a chess game against himself.
The villain: The other Gerie. Gerie's alternate self who opposes him in the chess game.
The donor: Gerie 1 again, he provides himself with a tactic in order to beat his other self.
The helper: Again, Gerie 1, he helps himself in order to win the chess game.

Equilibrium:
Gerie is an aging old man who is playing a daylong chess game with himself.
Dis-equilibrium:
During the game, his alternate self starts to defeat him in the chess game and Gerie is stuck without any ideas.
New equilibrium: His alternate being is beating him horribly but then he fakes a heart attack and literally turns the tables, thus winning the chess game and set challenge in the story.

The 5 codes inclusion:
The codes used in this are the action code, the semantic code, and the symbolic code.
The action code is used during the scene where Gerie is losing to his other self and then he fakes a heart attack in order to flip the table around.
The semantic code is involved in the sense that the setting is a quiet park bench in the sun, with two old men, or one man with two sides to him, playing a chess game in private. Most old people are sometimes stereotyped in the sense that they are old, worn out men who want quiet and cannot stand noise. That is why it is semantic, it is portrayed how people think it should be, an old man is a quiet park in the morning playing a chess game.
The symbolic code is somewhat involved as it includes a binary opposite. The story sees Gerie as an immature man especially when faking the heart attack. He is described as a young man at heart. This is the old-young opposite.