This is a half guard pass with back step and then switching back to the other side and passing with the knee slide pass.
Here is an alternative pass if you cannot execute the torreando pass because the opponent is locking their legs.
Here is a back step pass from the half guard, holding the opponent’s head and going to the side control.
3 Back step passes by holding the opponent’s head, putting your arm over the opponent’s head or your elbow in the opponent’s armpit. Each variation leads to either side control, mount or back control. The Back step pass can also be transitioned from the knee slide pass.