Solely Kashmir is of no benefit for Pakistan because all the dams are in Jammu region. They however chose to ignore than Jammu is a Hindu majority region.
It is a benefit for them because it shields their exposed capital. However, they have to find a way to get past India's military, which they have failed to do so 3 times.
Croatia and Slovakia border also isn't claimed by anyone; since Croatia wants the border to be where the Danube was, and Slovakia wants it to be where the Danube is now.
Nice quiz, but agree with at least one other commenter - needs the ability to zoom in. (Or, truncate the edges of the map that don't have any areas affecting the quiz.) There was a comment about time - I wasting time squinting at the map, but probably could have finished otherwise.