Final Fantasy VIII, Disc 2, Galbadia Garden, Basketball Courts. Apparently you can only walk up the left side of the staircase. I kept trying the right. I ended up getting all my characters and GFs to level 100 by fighting the Slapshot enemies before I figured out.

Took me about a month of on and off playing and frustration to get it right.

I feel like a dumbass just talking about it.