Chances are no one here has ever played Inindo Way of the Ninja for the SNES but Oda Nobunaga, the last boss in that game is insanely difficult. I wouldn't say that he's impoosible, merely that he can't be beaten by any of us mere mortals. I had that game for years without being able to beat it, eventually I had to get the rom and then fight him using save state and loading the state every time he didn't miss in his attack.