[Calvin Locke]

was the fact that the MiG-25 was completely unknown in the West [1976].

Not true. I was a war game enthusiast in my early teens, and there was a game called "Foxbat & Phantom" in the early 1970s.

Maybe have been the "game of the month (bi-month?)" in Strategy & Tactics Magazine.

[Kirkwood]

I played that game as well. I think late 1973 or early 1974.