This repository holds my attempts at solving the puzzles put forth by the annual Advent of Code. Every year, the site puts out a daily pair of holiday themed puzzles starting on December 1. The puzzles for each year are always available and will track your progress. I am currently using PHP for solutions in an attempt to stay on top of changes and trends in that community.
Note
Starting in 2025, the author only published 12 puzzles per year. An entirely empty cell in previous years indicates I have not solved either portion of that day's puzzle.
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Day 01 | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | |
| Day 02 | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ||
| Day 03 | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | |||||
| Day 04 | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ||||||
| Day 05 | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | |||||||
| Day 06 | ⭐ ⭐ | ⭐ ⭐ | ⭐ ⭐ | ||||||||
| Day 07 | |||||||||||
| Day 08 | ⭐ ⭐ | ||||||||||
| Day 09 | |||||||||||
| Day 10 | ⭐ ⭐ | ||||||||||
| Day 11 | |||||||||||
| Day 12 | |||||||||||
| Day 13 | - | ||||||||||
| Day 14 | - | ⭐ ⭐ | |||||||||
| Day 15 | - | ||||||||||
| Day 16 | - | ||||||||||
| Day 17 | - | ||||||||||
| Day 18 | - | ||||||||||
| Day 19 | - | ||||||||||
| Day 20 | - | ||||||||||
| Day 21 | - | ||||||||||
| Day 22 | - | ||||||||||
| Day 23 | - | ||||||||||
| Day 24 | - | ||||||||||
| Day 25 | - |