The butterfly, or cyclical pull-up, is one of those movements where full range of motion is easy to miss. Clearly getting your chin above the bar is our most common standard. If you are playing around with your pull-ups and decide to use the cyclical pull-up, make sure your chin is well above the bar. Close is not good enough. Cara does a great job making it clear.
Three rounds, each for time and load of:
Row 500 meters
15 "Eggshell" deadlifts
Rest 3 minutes