Problem 54780. Trap a knight

my solution (using brute force) is giving the right answer (on the test cases I checked) but it's failing in Cody due to time constraints. I hate it when it does that.
in test case - 5, tic-toc is giving me 5s. I might be able to optimize the code a little more but I am not sure that would be enough. I think it's failing on the loop test cases due to runtime.
is it necessary to use loop cases as they tend to take a long time? why not just random settings?

First off, why doesn't the MATLAB GUI find spiral when you search for it? I spent a lot of time building this myself before going on the internet for it.
Second, sorting a list and keeping the indices (second output argument from sort())is much faster than repeated finds when you're in the tens of thousands of finds and tens of thousands of array elements.