Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and 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.
The first puzzles will unlock on December 1st at midnight EST (UTC-5).
Some changes starting this year from the previous year(s):
There will be 12 puzzles instead of 25. (Why did the number of days per event change?)
There is no global leaderboard. (What happened to the global leaderboard?)




