The Decipher jigsaw was a relatively famous puzzle released in the early 80s, promising a $100,000 dollar prize to those that could solve it. After two years with no winners, the creator, Warren Holland Jr., released more and more hints until ultimately it was solved in 1985. You can read more about it in this paper released by MIT students who used access to MIT's computing power to help solve the cipher which was present on the jigsaw.
Holland went on to release another two puzzles; Decipher II and Decipher III. Both of these offered similar $100,000 prizes, but I'm struggling to find any info about solutions for them online.
So, were these ciphers solved and was the prize claimed? If so, by whom, and when?