JS: I have the same problem using an array, either have 501 length or fail the 500 user name. Any pointers?

Thanks for the feedback, it's similar to the kata you showed there but that one creates a matrix from a parameter and in this case the matrix is given and you need to show the "path" that needs to be traveled.

The example is showing

[1,2,3,6,9,8,7,4,5] =

[
[1, 2, 3],
[4, 5, 6],
[7, 8, 9]
]

You start top left to the right, then go down, then left, then up and start again to the right.

Didn't see that one, the difference is that the input matrix is nxn for that kata, in this case it's nxm.