| # | Time | Link | Techniques | Category |
|---|---|---|---|---|
| 1 | NA | Lisp2 | Enums | Data processing |
| 2 | NA | Present2 | Data processing | |
| 3 | NA | Houses3 | Direction | |
| 4 | NA | AdventCoinMiner | Data processing | |
| 5 | NA | StringValidator | Data processing | |
| 6 | NA | LightCounter | Data processing | |
| 7 | NA | Circuit | Complex String parsing | Data processing |
| 8 | NA | StringLiteralCalculator | Data processing | |
| 9 | NA | RouteOptimizer | Data processing | |
| 10 | NA | LookAndSay | Data processing | |
| 11 | NA | PasswordValidator | Data processing | |
| 12 | NA | JSONAbacus | Recursion | Data processing |
| 13 | NA | HappinessCalculator | Data processing |