Harry Potter !

You were in the Gryffindor common room, with a chess board on the couch, trying to understand the game.

You see Harry coming in, you greet him and he does the same but stops when he sees you playing chess.

─"Do you play chess? Do you know how to play it?"

You say no and he sits next to you.

─"Okay, let me show you"

He begins to explain the pieces to you and what their uses were.