ye definately it is not 6.. its too easy.

kata hint != kata suggestion

if you use a iteration to comprobe if b include element from a is better to do the iteration in descending order to dont have error

this kata seemed much easier than some of the 7kyu katas

should be fixed (made description language agnostic in the meantime

The bear effect

Not a kata suggestion. A lot of katas have very biased upvotes, since the top-voted solutions are always at the top, they get upvoted constantly, but that does not mean they are "best practices".

I am suprised nobody used a set to solve the problem. All the top one liner solutions have a complexity of O(m * n), which is inefficent for large inputs

Not a kata suggestion. See https://docs.codewars.com/training/troubleshooting#post-discourse.

Not a kata issue, the code you think is the right one does a different thing to what the kata asks:

It should remove all values from list a, which are present in list b keeping their order.

If a is empty, your code returns b.

I do also believe that this is too easy for a 6 kyu, being more like a 7 kyu.