Sounds like the ZeroG(zero grid) challenge from the FFX forums at the squaresoft usa playonline site. Beat the game with zero grid advancement, the only things you could get were Skills, no magic, stats etc. The game became strategic instead of "get Breaks". The game is completeable reportedly, I got upto Seymour Flux, only two people I have spoken to ever got further, one got beat down by Yunalesca and the other finished it, Braska's Final and YuYevon are reportedly piss easy you just use ZombieHit or an item that inflicts Zombie, they then effectvely kill themselves.

Also the above link doesn't work, because we are naughty bandwidth stealing gremlins. You have to load it directly into the addy bar.