Old School + Open Guard Pass + Open Guard Sweep

Old School Half Guard Sweep:
B starts in half guard position blocking the cross face and far side underhook. Using the underhook B goes to deep half guard and using the arm that was blocking the cross face grabs T's heel. B's left underhook arm then comes around the outside of T's thigh and grabs the heel that is being held with their other hand. B then uses their right arm to base on the mat and comes up to their knees to sweep.

Open Guard Pass:
This pass is used when B opens their guard to sweep when T stands up to pass.
T comes forward over B's head as if diving like superman. This forces B's legs to go over their head and they are stuck inverted with pressure. T then takes either of their arms and comes across the legs and secures a lapel grip like a double under pass. T then clears the legs and lands in side control.

Open Guard Sweep:
This sweep is used when T stands up in guard to pass.
B has same side sleeve grips on both sides. Once T stands, B opens their guard and places their legs on the sides of T's shins. B then clamps their legs together to force T's legs to close. After the legs are closed, B triangles their legs, locking T's legs together. Using their legs and the sleeve grips, B brings T into them and sweeps them to whichever side.