Clicked on as fast as my computer would take clicks. But I did, I think, notice the Medium move -- a rarely seen positive intersection, ie., a certain number must be in either of these two positions in a column and in either of these two positions of a row. So where the row intersects the column, that's where it goes. 16.
Don't know why, but I like mediums the most, possibly as they're so rare! I'm sure they were more common in the early days.