Possible application of TKD poomsae Kukkiwon Koryo, part 23b – grab and pull opponent while executing a yopchagi to opponent’s low mid-section/hip area.
The important bit here is that we must pull-back opponent the same time as we execute the side-kick. A common mistake is to first pull hands back, and then throw the side-kick.
See time 0:37s in the video below for the actual poomsae execution.
From my 3rd dan grading ceremony, June 11, 2016.
Many thanks to my partner, Instructor Felipe.