# Advent of Code - 2021 | | | | | | |-|-|-|-|-| | [1](1) | [2](2) | [3](3) | [4](4) | [5](5) | | [6](6) | [7](7) | [8](8) | [9](9) | [10](10) | | [11](11) | [12](12) | [13](13) | [14](14) | [15](15) | | [16](16) | [17](17) | [18](18) | [19](19) | [20](20) | | [21](21) | [22](22) | [23](23) | [24](24) | [25](25) |