Adventofcode.com

Advent of Code is an annual event featuring daily programming puzzles released every December. You can solve these fun challenges in any programming language, making it a great way to practice your skills or try out new ones. Each puzzle is designed to be engaging and accessible, whether you're a beginner or an experienced coder.

You can track your progress, compete on global leaderboards, and even join private groups with friends or coworkers. Advent of Code has a friendly, active community where you can discuss solutions, share ideas, and celebrate achievements. It's perfect for anyone who enjoys problem-solving, learning, and a bit of friendly competition.