# Advent of Code > Advent of Code is an Advent calendar of small programming puzzles for a variety of skill levels that can be solved in any programming language you like. People use them as interview prep, company training, university coursework, practice problems, a speed contest, or to challenge each other. > -- [Eric Wastl](https://was.tl/) (Advent of Code creator) My (casual) attempts at [Advent of Code](https://adventofcode.com). The solutions are released under the [*unlicense*](LICENSE). As such, they are public domain and you may ~~steal~~ use them in pretty much any manner you see fit.