Haha, I just got it...

That was a lot of fun, thanks zLuki!

In box 3, echo is listed as an available command, but is not recognised as a command or using man :)

Man, I made that trickier than it needed to be. facepalm

Actually I got a working algorithm easily but it was too inefficient. Then I spent all day with Wolfram Alpha for company trying to understand it all. Needless to say, that is not needed. But it was really fun, thanks to AlexIsHappy and all contributors.

I do wish that the code comparisons you see after completion only contain ones for the current kata. I guess this is an issue with Codewars and not this particular kata.

Anyway, really fun so thanks! :D

Great fun!

Thoroughly enjoyed this one, thanks to frenetic_be and anyone who's contributed! :)

Thank you for the advice. I realise it's not the correct way to go about fixing my issues. But it's good to see what results I'm getting back. I will re-examine refactor and retry! It's a good puzzle and my first Kata that needs code optimization. It's a good challenge. Thanks for your advice.

Definitely getting more results when I print!! I was always timing out after about 400 ish now, I get over 500 every time!

Edit: I think it's strange too, why can I always get more results when I use a print statement. I realise it doesn't add a lot more complexity, but it consistently allowed me to complete more tests.

I was getting a timeout @ 12000 then I added a print statement and completed more tests...the performance test gives me a buffer error (in python)...more head scratching