Connect all the points using one line only

how to play?

Tap a node to start drawing, drag to another node with a blue line connection to connect it, if the connection doesnt exist or is already green, or doesn't correctly match the triangles direction, nothing happens. A triangle indicates you need to go to the node specifically from base 1st or it wont let you access. If you let go, all green lines turn blue. Make all lines green to win.