As mentioned before, the plan here is to focus on content and fast turnaround while keeping the production quality adequate for now.
In terms of content, the idea behind this particular series is to use the puzzles to introduce general problem solving concepts such as thinking about what aspects of a specific problem make it easy or difficult and how that information can suggest a direction for approaching the solution.
These aren't yet where I want them to be, but they're moving in the right direction. Let me know what you think.