HackerTube / Video
I Solved Klotski
2swap

2swap explains how he solved the Klotski sliding-block puzzle by mapping its full state space as a graph and visualizing it. The video includes footage of the Guinness world-record solve and links to an interactive graph.
HN people point to it for intuition about why some games are hard to navigate and for its Rush Hour and graph visualizations.
4 Hacker News mentions · 2025–2026