| Day | Fun | Difficulty | Task Description |
|---|---|---|---|
| 1 | ★★★☆☆ | ★☆☆☆☆ | count equal digits |
| 2 | ★★☆☆☆ | ★☆☆☆☆ | find and add divisible numbers |
| 3 | ★★★★☆ | ★★★☆☆ | 2D spiral coordinate decoding |
| 4 | ★★★★☆ | ★★☆☆☆ | word list rule checking |
| 5 | ★★★☆☆ | ★☆☆☆☆ | random list traversal |
| 6 | ★★☆☆☆ | ★☆☆☆☆ | rule-based simulation |
| 7 | ★★☆☆☆ | ★★★★☆ | tree traversal and balancing |
| 8 | ★★★☆☆ | ★☆☆☆☆ | CPU simulation |
| 9 | ★★★☆☆ | ★★☆☆☆ | regular expression string transformation |
| 10 | ★★★☆☆ | ★★☆☆☆ | custom hashing algorithm |
| 11 | ★★★★☆ | ★★☆☆☆ | infinite 2D hex grid traversal |
| 12 | ★★★★☆ | ★★☆☆☆ | graph partitioning using sets |
| 13 | ★★★☆☆ | ★★★☆☆ | applied modulo arithmetic |
| 14 | ★★★★☆ | ★★★☆☆ | 2D connected-component search |
| 15 | ★★★☆☆ | ★★☆☆☆ | matching two PRNG outputs |
| 16 | ★★★☆☆ | ★★★☆☆ | repeated list manipulation with cycle detection |
| 17 | ★★★☆☆ | ★★★★☆ | circular linked list manipulation |
| 18 | ★★★★☆ | ★★☆☆☆ | CPU simulation |
| 19 | ★★★★☆ | ★★☆☆☆ | follow a 2D track layout |
| 20 | ★★☆☆☆ | ★★☆☆☆ | particle simulation |
| 21 | ★★★★★ | ★★★☆☆ | 2D fractal pattern generator |
| 22 | ★★★★★ | ★★★☆☆ | Langton's Ant and Turmites |
| 23 | ★★☆☆☆ | ★★★★★ | reverse engineering |
| 24 | ★★★☆☆ | ★★★☆☆ | domino puzzle layout optimization |
| 25 | ★★★★☆ | ★★☆☆☆ | Turing machine simulation |