2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024
| Day | Problem Page | Status | Difficulty | Solution Page | Test Page | Tags |
|---|---|---|---|---|---|---|
| 1 | No Time for a Taxicab | 🥇 | ❄️ ❄️ | day_01.ex | day_01_test.exs | grid, measurement, set, rust |
| 2 | Bathroom Security | 🥇 | ❄️ | day_02.ex | day_02_test.exs | grid, rust |
| 3 | Squares With Three Sides | 🥇 | ❄️ | day_03.ex | day_03_test.exs | geometry2d, matrix, count |
| 4 | Security Through Obscurity | 🥇 | ❄️ | day_04.ex | day_04_test.exs | sequence, checksum, rust |
| 5 | How About a Nice Game of Chess? | 🥇 | ❄️ ❄️ | day_05.ex | day_05_test.exs | slow, md5, annoying |
| 6 | Signals and Noise | 🥇 | ❄️ | day_06.ex | day_06_test.exs | sequence, optimization |
| 7 | Internet Protocol Version 7 | 🥇 | ❄️ | day_07.ex | day_07_test.exs | validation, count |
| 8 | Two-Factor Authentication | 🥇 | ❄️ ❄️ ❄️ | day_08.ex | day_08_test.exs | visual-result, matrix, op-code |
| 9 | Explosives in Cyberspace | 🥇 | ❄️ ❄️ ❄️ | day_09.ex | day_09_test.exs | sequence, unfold |
| 10 | Balance Bots | 🥇 | ❄️ ❄️ ❄️ | day_10.ex | day_10_test.exs | data-modelling, genserver |
| 12 | Leonardo's Monorail | 🥇 | ❄️ ❄️ | day_12.ex | day_12_test.exs | slow, op-code |