Daily Chess Puzzle

Today’s puzzle is a change from the normal, inspired by a tweet by Olimpiu Orcan-see my posting of 7th February 2018.

On an occasional basis I will post a challenge to see if reader’s can spot the games which had particular moves.

Which famous game had   24 Ba7!!   in it?

Karpov v Unzicker, Nice Olympiad 17.6.1974.

I remember seeing this game in British Chess Magazine at the time, and being stunned by it.