What is the third test case? My function works for all the tests before it, just not that one. It says "Expected: ac, instead got: a".

I think this Kata may be impossible if it can't calculate all possible paths, plus the instructions aren't clear enough. Does your solution just pick the max of the 2 closest to it, the max above it? That's what I'd do, but that doesn't always give you the max path. Or does it?

What is the 5th test case? My function throws an error and I don't know why.

I've got the same issue