Advent of Code 2025

Also posted this on the Progress Discord server, so perhaps you already read it...

Do you like coding? And a little challenge? And a little fun?​

If three times a yes, then Advent of Code is something for you.

What is it
In their own words: "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". So that includes the ABL as well. And the good news is: it's free, although you are invited to become a sponsor for any amount you like.Every 2 days, starting 1 dec, you will get a small puzzle that you have to solve. You can use any method you like, pen & paper, excel, python, abl, gwbasic or whatever you like.

Why is it fun
I rarely have to deal with recursive procedure, breadth-first search, Dijkstra or similar techniques in my day-to-day work, so using the ABL in many unusual ways is fun to me. But even more, when I'm done, I like to see how others solved the problem and that's where you come in (HA! admit it, you didn't see that one coming, did you?)

How to join
Register yourself at www.adventofcode.com
And if you already haven't, this might be a good moment to get a GitHub account so you can link that to AoC

Ok, joined. Now what?
Wait for dec 1 when the first puzzle unlocks, or take a look at last year's puzzles to get an idea.
Report your GitHub repo here so we can compare solutions
There is a leaderboard with several Progress developers, maintained by Wim van der Ham
 
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