John Kowalski is a well-known expert with the TRS-80/Tandy Color Computer with some of the most impressive graphics demos to ever be created in this community. He’s taken people up on many challenges before and I don’t know of any he didn’t beat.
John has also been involved with many other computer and game-related projects.
Who else could have made the actual original Donkey Kong game run on the CoCo 3? You guessed it.