Final Fantasy 1 for the NES was a favorite game among my circle of friends when we were younger. There weren't many RPG offerings for NES at the time.
Many years later, I revisited running through the game with an odd-challenge: create a party of four that only uses the Black Belt / Master class. Normally, a party would consist of a relatively diverse group -- some melee, some magic -- but I was wondering, is this really necessary?
As it turns out, the first time I ever beat the game completely was with a party of 4 non-magic users. Because it was such an odd thing, I wrote up a guide for it and published it on GameFaqs.
The original publication was on my blog, which also includes screenshots, including one of defeating the final boss, Chaos.
http://amhill.net/2013/06/14/final-fantasy-i-all-black-belts/
https://gamefaqs.gamespot.com/nes/522595-final-fantasy/faqs/64345