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    I Solved Klotski

    2swap

    3 HN recommenders · recommended in 3 months, 2025–2026

    YouTube

    12:20 · 2.1M views · Aug 22, 2025

    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.

    Games & Game DevelopmentChess, board games & puzzlesAlgorithms & data structuresData visualization & information design
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    4 comments from Hacker News

    1. @chiiSep 2025· in “What Is Complexity in Chess?”

      This reminds me of this nice video : this video basically, the state space of the game can produce some intuition on why certain games are hard, and is demonstrated as a clustering of various states that are only linked to the winning state by a very small number of edges. So a player can easily "get lost" in the maze.

      RecommendsView on HN
    2. @ohcDec 2025· in “Solving Rush Hour, the Puzzle (2018)”

      Great article, very impressive to solve the entire game, rather than just individual puzzles. PS: Good chance that if you're reading these comments that you will appreciate this video by 2swap, visualising solutions to Rush Hour in 3D: this video

      RecommendsView on HN
    3. @sublinearFeb 2026· in “Like Game-of-Life, but on Growing Graphs, with WASM and WebGL”

      This looks similar to the graphs on "2swap"[1]. Worth a watch if you haven't by now. [1] this video

      RecommendsView on HN
    4. @dzaimaSep 2025· in “Klotski”

      This is an interactive accompaniment to a video that contains more information: this video (previously discussed a bit at [LINK] )

      CitesView on HN