3. From the tunnel
There are really two variables here that are upping the level of difficulty. The first is obviously the distance. He’s likely 50-feet or more from the basket, which makes this essentially a half-court shot, which he handles with basically a flick of the wrist.
The other is the accuracy needed to make a shot this deep from the corner. Having the backboard in play raises the likelihood of a halfcourt shot going in but it also aids in visual discrimination and gives a clearer target to line up with. The lesson here is Steph Curry doesn’t need visual aids.