Cycle rank

Cycle rank is like figuring out how many times you have to go around in a circle to get back to where you started. Let's pretend you are playing on a playground and there is a roundabout that you want to go on. You and your friends all line up and take turns spinning around on it.

The cycle rank is like how many times the roundabout needs to spin around before everyone is back in their original spot. For example, if there are four of you and you all take turns going around once, the roundabout would need to spin around four times for everyone to be back where they started. That means the cycle rank is 4.

In other words, cycle rank is a way of measuring the shortest distance you need to go around in a circle to get back to where you started, while touching every point along the way. It's like trying to find the most efficient route on a map that takes you back to your starting point without skipping anything.