Ton of fun! Was interesting to see how my strategy evolved as well. I started out trying to make a large pen, but quickly realized that wouldn't work, so I made a small pen and then started moving it out. This allowed me to see individual optimizations and try alternatives. Even at the end, about to hit submit, I wasn't sure my solution was optimal, but ended up with the optimal sizse-86 solution for today's challenge. Will try again tomorrow!