Translation:Is it a game or a job when a child solves a problem?
I think the article "a" should be repeated twice: "Is it a game or a work?.." Both nouns are singular, neither is known to the speaker (he knows neither which kind of game it is nor which kind of work it is), and it's not a compound subject ("game or work" does not serve as a single entity which can be addressed with a single article). Therefore, in my opinion, "a" should be repeated twice. Am I right?