DigiNews

Summary

The Day 9: Movie Theater thread gathers a variety of approaches to Advent of Code 2025 Day 9, focusing on determining the largest rectangle inside a perimeter defined by red tiles. Contributors discuss brute-force checks, coordinate compression to a manageable grid, and leveraging geometry libraries like Shapely, as well as Prolog and other languages, highlighting the trade-offs between memory, speed, and correctness across inputs.