On a 12-foot snooker table, cut the black ball to the corner pocket to your left shooting from the green spot. This is a "half-hour" shot. Maybe not more than 90 degrees, but I think outside english is required to get enough speed.
I've done that plenty of times on a snooker table many years ago before I gave up snooker and concentrated on pool. It is a hard shot, but it is actually easier than it looks due to the extreme sidespin throwing the 7-ball into one of the cornet pockets.