In our current adventures my PCs are in a specific very large City. By searching, they found a specific black market shop, the route leading to which was a bit complicated.
Can they roll an intelligence check to determine if they remember the complex route, or do I have to describe the roads one by one until they find it again (which is not a problem)?
I try to run the campaign as realistic as possible and this situation is like a common real life problem. We tend to use marks along the way (shops, signs) to remember specific routes, but a lot of times we fail because we don't remember minor details (which is described as high check).