Here is the overhead shot of the last challenge:

We were told that the players had to retreive bags from 5 stations and we clearly see all 5 stations used by the players at the bottom of the picture. However, we see that they built a "flower" with 10 "petals" and that there are colored circles and flags in all the unused petals. Was the challenge more complicated than what we saw? If so, any ideas what was involved?