I suppose I'll take a guess from pictures, just to give myself a shot...
2) some fill in center of fairway
3) fill right side of green
4) fill for bunkers fronting left green side
6) some cut right side of fairway
10) fill to create green
13) cut right side of green
14) cut to create green
17) cut right, fill left to shelf green
Really, could be anything. Some areas could just have a little de-veg, some look re-grassed. It all messes with your head slightly, as far as a competition like this goes. I think the fact that guesses are all over the place speaks volumes.
B