2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023
| Day | Problem Page | Feel | Solution Page | 😉 |
|---|---|---|---|---|
| 1 | No Time for a Taxicab | 🌟 | year16/day01 | 🪂 🗺️ |
| 2 | Bathroom Security | 🌟 | year16/day02 | 🛀 🔐 |
| 3 | Squares With Three Sides | 🌟 | year16/day03 | 🔺 🔺 🔺 |
| 4 | Security Through Obscurity | 🌟 🌟 | year16/day04 | 🧊 🏢 |
| 5 | How About a Nice Game of Chess? | ⌛ | year16/day05 | #️⃣ ♟️ |
| 6 | Signals and Noise | 🌟 | year16/day06 | 🎛️ 🎼 |
| 7 | Internet Protocol Version 7 | 🌟 | year16/day07 | 📲 🔌 |
| 12 | Leonardo's Monorail | ⌛ | year16/day12 | 🚂 🎛️ |
| 13 | A Maze of Twisty Little Cubicles | 🌟 | year16/day12 | 🏢 🗺️ |
| 16 | Dragon Checksum | ⌛ | year16/day16 | 🐉 |
| 20 | Firewall Rules | 💚 | year16/day20 | 🔥 🧱 |
| 21 | Scrambled Letters and Hash | ⌛ 😣 | year16/day21 | 🗄️ 🔒 |
| 23 | Safe Cracking | 🌗 | year16/day16 | 🥚 🐰 |
| 25 | Clock Signal | 👀 👀 | year16/day16 | 🕧 |