Welcome to AoC 2021!
A clumsy elf has dropped the sleigh keys into the ocean. You need to recover the keys in order to save Christmas.
This was a tough AoC. The first half was easy enough. But the second half had a lot of time-consuming challenges. I had taken a few days off work over Christmas. And it was just as well. I needed the time!!
Ready to save Christmas? Follow the links below.