Can we control Access to K2 Articles in a way that only register user can download attachments, but Guests can see the k2 Articles?

Use something like this in an override wrapping the attachments block with and if statement

My editor has probably messed up the code a bit, but you will see the idea

I found a great snippet for doing just this a while ago and saved it.  THIS IS NOT MY CODE.  Thought I had the original link saved, but  can't find it.  If anyone knows who created this, please post so they get proper credit...

 

See attached PDF for code to change.