Personally, as a person born in Georgia, I find the title, a reference to Sherman's destruction of much of Georgia during the American civil war, offensive. As ksdhart2 said, since the total number of rats will be the same no matter what route he takes, the problem reduces to finding the shortest route. That can be done by calculating the cost of all routes. Since there are 11 roads to cover there are no more than 11! different routes. Tedious but doable.