My friend Lily told me about this Atari2600 game a few years back, and we both love it. Even though this game doesn't play that good today, I'm a massive fan of it. Harder difficulties are notorious for extremely long thinking times. According to the manual, the average time it takes for the CPU to move is 10 hours on Level 7. Not only that, but there were rumors of the CPU cheating and moving twice in one turn.
This TAS plays the easiest difficulty, Level 8. This pretty much copies SheChardcore's RTA WR, move for move:
https://youtu.be/kmzwUS_9HA0?feature=shared
I don't know if there are any possible improvements to this. My dream is to make a Level 7 TAS, but unfortunately there's two issues:
1. It would be a behemoth to do. The extremely long wait times make it exceptionally difficult (the computer's first move took over 30 minutes).
2. The second I make my move, BizHawk crashes. I'm on my friend's laptop, so maybe it just can't handle it, but Lily says that he can't get it to work on his machine either. So either I'm doing something wrong, or Level 7 simply can't be emulated.
That being said, out of all the searching I've done on the internet, there has been only ONE person who claimed to have beaten Level 7 before as black. I could just copy the moves, but I don't know if that would be interesting or fast.
The entire game has also been disassembled and commented by nanochess: https://nanochess.org/video_chess.html