Advent of Code 2025: Number of puzzles reduce from 25 to 12 for the first time

The article discusses the changes in the Advent of Code 2025 event, where the number of puzzles has been reduced from 25 to 12 for the first time. Advent of Code is an Advent calendar of small programming puzzles for various skill levels, allowing participants to solve them in any programming language. The event serves as interview prep, training, coursework, or a competition. The organizer, Eric Wastl, emphasizes that participants don't need a computer science background to join. Additionally, the article provides tips, FAQs, and guidelines for participating in the event, emphasizing problem-solving skills and community engagement.