by Fergus Heywood, Nancy Taubenslag, John McLaren, Julia Tenney, and Jesse Gelles

Since the puzzle content changed each time loop, teams needed to solve each mini-puzzle and confirm their answer before the round reset. The six earned transparencies, when stacked and oriented correctly, revealed a groundhog image and the message, “What does my shadow reveal?”

At this point, teams then gained access to a new room which was “Phil’s Burrow”. Teams were shown a lightbox and told that Phil’s shadow would reveal the answer to them. The shadow on the transparency was actually polarized film, and by looking through the filter the lightbox revealed the answer RECURSIVE.

(Hover over the image below to see the effect.)