A little backgound on my opponent: Steve Rand was a great guy, a wealthy retired fellow who had probably been around 2000 USCF for many years. I will always remember a tournament he graciously hosted over a weekend in his home, which featured a living room large enough for five or six games to go on at the same time. He was a friend of the late Grandmaster Larry Evans, who dropped in on the tournament and even chatted with me a bit.
By the time of this game Steve Rand was in his 70s, I suppose, but still sported an 1838 rating. He overlooks one tactical shot and I find all the right moves, which after 16. .Nxf4! admittedly aren't all that hard, but still, since I haven't played many games where I only make one single mistake, nor knocked off that many players rated over 500 points above me, here is Memorable Game 11: