I did exactly what @Pecet recommended and took out my System.out.println() and the issue was fixed

Could someone explain what this code is doing? I dont think I understand how this yields the needed result

Really liked this Kata...just the right amount of challenging for 6Kyu :)

Sorry I marked it as an issue and I do appreciate the help. Will mark as question in the future :)

How can you pass in arguments in the test cases but create a defaut function def is_visible() with no arguments? (Using python)
_Are we supposed to be passing in a list?

Great for 8Kyu

Figure it out. I needed to return head in my push function and set head = push(head, 3) in my build_one_two_three() function

I don't get it. What am I supposed to be implementing? Am I supposed to be changing the test cases?

Did you ever figure it out? Could you possibly explain it to the rest of us what this problem is asking for?

Can someone better explain this Kata? For the test case of 15 (15 height X 15 width X 15 depth) shouldnt that equal 30 because 2 of the sides are not visible? Why does this yield 27 instead?

I don't get it. Whats wrong with having ans as your variable name?