If you feel the global challenge is out of reach, you can setup a private leaderboard for you and anyone you give the 'join code' to, localizing competition and

If you feel the global challenge is out of reach, you can setup a private leaderboard for you and anyone you give the 'join code' to, localizing competition and points to your own circle of "AoC" friends: http://adventofcode.com/2017/leaderboard/private http://adventofcode.com/2017/leaderboard/private