Matt Pullin takes a look at Aaron-Robatsch, Varna 1962. (After 1...Bd4, I think 2.Bf4 might be the most stubborn defense.)
And in the second video on this ending, where is Black's forced win after the bizarre-looking 4.Kh4!? (instead of 4.Rc2, which I think makes the win easy)? I'm pretty sure that Black should win, but the direct encircling maneuver fails to a White counterattack on d6.