Again. Please delete this thread. Thank you.
Each challenge has a “get a hint” button. This takes you to a Guide link. Many of those guides haven’t been completed yet, but they will all have possible solutions. If you don’t want to save your solution, you will eventually be able to see other people’s solutions there.
Historically, many of the challenge guides have included three solutions: the standard beginner solution a more efficient solution or just different approach, and a advanced solution that may include knowledge knowledge beyond the scope of the challenge. In any case it would be a reference. The guides are written by volunteers, but reviewed and approved by experienced members of the community.