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Every 5×5 Nonogram by eieio

10 Comments

  • Post Author
    okayestjoel
    Posted May 31, 2025 at 12:41 am

    This is my game! I was recently curious about how many 5×5 nonograms can be solved purely with logic, no guessing. After running my nonogram solver on all 33,554,432 possible pixel combinations in a 5×5 grid, it turns out the answer is 24,976,511.

    Inspired by One Million Checkboxes, I thought it would be cool to create a realtime, collaborative nonogram game where we can collectively try to complete all ~25 million of these puzzles. Just launched it this afternoon and its already at 65k solved!

    Let me know if you have any feedback.

  • Post Author
    anxiousbuddhist
    Posted May 31, 2025 at 3:25 am

    This is a ton of fun!

    A really useful feature would be to hide finished and/or in progress ones so I don't have to scroll forever.

    Great work, nicely polished, cool idea.

  • Post Author
    tantalor
    Posted May 31, 2025 at 3:53 am

    No but really how do I play. Do I click something to start a puzzle?

  • Post Author
    scythe
    Posted May 31, 2025 at 5:24 am

    This is a downright hazard. I scrolled down to find one that wasn't solved yet, and the next thing I knew it was 30 minutes later and I had solved a hundred of them.

  • Post Author
    butz
    Posted May 31, 2025 at 5:46 am

    In my youth I was considering drawing all possible 8×8 1bit color pixel icons and never got around to it. Probably it is the time to finally do it, and maybe even go further with 2 bit colors?

  • Post Author
    NooneAtAll3
    Posted May 31, 2025 at 5:46 am

    idk if it's a bug or smth, but it keeps resetting the page to the top of the section

    I can't start solving from the middle

  • Post Author
    bspammer
    Posted May 31, 2025 at 8:55 am

    This is great, but someone is going to ruin the fun with a bot eventually, I hope you have a way to remove “solves” by IP.

  • Post Author
    fph
    Posted May 31, 2025 at 11:47 am

    There must be a swastika picture in there, somewhere.

  • Post Author
    x-complexity
    Posted May 31, 2025 at 1:20 pm

    I haven't seen anyone say this out loud, so here's my $0.02:

    Since every box is either filled in (1) or not (0), a solved 5×5 nonogram can be encoded as a 25-bit unsigned integer. So would a 6×6 (36), 7×7 (49), 8×8 (64), etc.

    … So if desired, an AES-256 key can be encoded as a solved 16×16 nonogram. The perimeter hints can then be derived by Alice and given to Bob as a weak form of information obfuscation.

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