Graph Topology and Battle Royale Mechanics

&#xA; &#xA; The other day I found Alan Pike&rsquo;s blog post from a few years ago which describes his iterative process for determining the order cities should be closed in the game Two Spies. Ultimately, finding a formal solution to city closing wasn&rsquo;t necessary for the game, but it&rsquo;s worth giving it a shot anyways since pruning by hand isn&rsquo;t always convenient.