Advent of Code (2015) Day Solution Day 1: Not Quite Lisp Code Day 2: I Was Told There Would Be No Math Code Day 3: Perfectly Spherical Houses in a Vacuum Code Day 4: The Ideal Stocking Stuffer Code Day 5: Doesn't He Have Intern-Elves For This? Code Day 6: Probably a Fire Hazard Code Day 7: Some Assembly Required Code Day 8: Matchsticks Code Day 9: All in a Single Night Code Day 10: Elves Look, Elves Say Code Day 11: Corporate Policy Code Day 12: JSAbacusFramework.io Code Day 13: Knights of the Dinner Table Code Day 14: Reindeer Olympics Code Day 15: Science for Hungry People Code Day 16: Aunt Sue Code Day 17: No Such Thing as Too Much Code Day 18: Like a GIF For Your Yard Code Day 19: Medicine for Rudolph Code Day 20: Infinite Elves and Infinite Houses Code Day 21: RPG Simulator 20XX Code Day 22: Wizard Simulator 20XX Code Day 23: Opening the Turing Lock Code Day 24: It Hangs in the Balance Code Day 25: Let It Snow Code