yeah, i think there has to be sufficient "surface area" for you to "find a way in". the simplest way would be to write a larger app, but in your case you could

yeah, i think there has to be sufficient "surface area" for you to "find a way in". the simplest way would be to write a larger app, but in your case you could increase your chances for learning by working on other problems and then going back over earlier work - it's possible that you learn something on a later problem that helps you see the one liner in the earlier problem.