I've been continuing to pour through back issues of Ahoy! and have found two more of my non-published, but acknowledged Commodares submissions. I don't know which problems these were for - maybe multiple problems, since I have memories of working on many of them.
These were also during my early high school years. At this time the only programming resources I had were practice problems from the computer programming team competitions and these magazines. I did manage to get my hands on at least one programming book during this time, and I have vague recollections of some programming tutorials downloaded from BBS's, but there really really wasn't that much.