It seems that it counts by reading the description: "small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. People use them as a speed contest, interview prep, company training, university coursework, practice problems, or to challenge each other." But since I haven't used it, you or someone else can have the final say. I was thinking of an addictive game with progressive complexity and time-limited challenges that make you feel like you didn't waste time because of the knowledge you've gained.