Cross Or Not Cross 1.1 (Mobile)

Cross Or Not Cross is a mathematical game based on networking/graph theory. The goal is to rearrange the nodes so that the connections (edges) cross as few times as possible.HOW TO PLAYInitially the nodes are placed circularly and all pairs of edges cross. Drag the nodes around the screen to avoid crossings. You win the game when the number of crossings can't be reduced further. RULES Overlapped edges are considered crossed infinitely many times. If three (or more) edges cross through the same point, that point is counted once for each pair of those edges. For example, a point crossed by 3 edges is counted 3 times, a point crossed by 4 edges is counted 6 times.CONTROLS Use button "Show goal" to see how many crossings you need to reach. Use button "Restart" to put the nodes back to their original positions; the number of nodes is not changed. Use the slider to change the number of nodes. The maximum number of nodes is ten. This will replace the nodes.