| Day | Name | Part 1 | Part 2 |
|---|---|---|---|
| 1 | Inverse Captcha | ✔ | ✔ |
| 2 | Corruption Checksum | ✔ | ✔ |
| 3 | Spiral Memory | ✔ | ✔ |
| 4 | High-Entropy Passphrases | ✔ | ✔ |
| 5 | Maze of Twisty Trampolines, All Alike | ✔ | ✔ |
| 6 | Memory Reallocation | ✔ | ✔ |
| 7 | Recursive Circus | ✔ | ✖ |
| 8 | I Heard You Like Registers | ✔ | ✔ |
| 9 | Stream Processing | ✔ | ✔ |
| 10 | Knot Hash | ✔ | ✖ |
| 11 | Hex Ed | ✔ | ✖ |