A mouse, a cat, and a dog are all away from their respective houses and you have to guide each of them home. However, because the cat and the mouse are afraid of the dog and the mouse is also afraid of the cat, none of the paths can cross. The following picture shows their positions as well as the locations of their houses.
I was pleasantly surprised at how quickly she solved it. I was further amused when a few minutes after that she presented me with a puzzle of her own.
Katie and Ari are going to each others birthday parties and they can’t meet (not really sure what the exact reason was for that).