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Start all of your commands with a comma (2009)

https://rhodesmill.org/brandon/2009/commands-with-comma/
230•theblazehen•2d ago•66 comments

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
694•klaussilveira•15h ago•206 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
962•xnx•20h ago•553 comments

Hoot: Scheme on WebAssembly

https://www.spritely.institute/hoot/
5•AlexeyBrin•59m ago•0 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
130•matheusalmeida•2d ago•35 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
66•videotopia•4d ago•6 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
53•jesperordrup•5h ago•24 comments

Jeffrey Snover: "Welcome to the Room"

https://www.jsnover.com/blog/2026/02/01/welcome-to-the-room/
36•kaonwarb•3d ago•27 comments

ga68, the GNU Algol 68 Compiler – FOSDEM 2026 [video]

https://fosdem.org/2026/schedule/event/PEXRTN-ga68-intro/
10•matt_d•3d ago•2 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
236•isitcontent•15h ago•26 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
233•dmpetrov•16h ago•124 comments

Where did all the starships go?

https://www.datawrapper.de/blog/science-fiction-decline
32•speckx•3d ago•21 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
335•vecti•17h ago•147 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
502•todsacerdoti•23h ago•244 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
385•ostacke•21h ago•97 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
300•eljojo•18h ago•186 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
361•aktau•22h ago•185 comments

UK infants ill after drinking contaminated baby formula of Nestle and Danone

https://www.bbc.com/news/articles/c931rxnwn3lo
8•__natty__•3h ago•0 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
422•lstoll•21h ago•282 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
68•kmm•5d ago•10 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
96•quibono•4d ago•22 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
21•bikenaga•3d ago•11 comments

The AI boom is causing shortages everywhere else

https://www.washingtonpost.com/technology/2026/02/07/ai-spending-economy-shortages/
19•1vuio0pswjnm7•1h ago•5 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
264•i5heu•18h ago•215 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
33•romes•4d ago•3 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
63•gfortaine•13h ago•28 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1076•cdrnsf•1d ago•460 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
39•gmays•10h ago•13 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
298•surprisetalk•3d ago•44 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
154•vmatsiiako•20h ago•72 comments
Open in hackernews

Simon Tatham's Portable Puzzle Collection

https://www.chiark.greenend.org.uk/~sgtatham/puzzles/
200•sogen•6mo ago

Comments

3036e4•6mo ago
I installed that on both my computer and phone after someone mentioned it in some HN comment a few months ago. On my phone it has been the only game I have played in several years that wasn't in an emulator (mostly DOSBox).

Also convinced my kids to install it on their phones, hoping that it will distract them somewhat from the apps they otherwise use. Not much success with that. I guess there isn't enough bling. If it was full of animated coins and sound effects triggering on every interaction it would probably work much better for competing with normal app-driven rubbish mobile games.

glimshe•6mo ago
I wonder if they would be happy with modern graphics but no twitchy bling. I mean, 3d shaded and colorful tiles. Kids these days associate spartan graphics with old school/boring gameplay.
sheiyei•6mo ago
A version with better UI for mobile could be super neat.

And I don't mean that it needs to be a Flutter app that launches in 3 business days and eats battery like a horse, just that it didn't look like it's from 2012. (Some of the UI design elements are also frankly confusing)

ggm•6mo ago
I very much hope people link more like this here. My favourite right now is the love solitaire, and jongmah

https://love2d.org/forums/viewtopic.php?t=95641

https://www.jongmah.com/

cwmoore•6mo ago
I had not seen the love solitaire, but I have made a heart-shaped Kakuro puzzle into a book and minimal web app:

https://www.kakurokokoro.com

beefsack•6mo ago
I wonder how many thousands of hours I have put into this wonderful collection. My kids play them too.

There's some jank relating to fractional scaling on Wayland unfortunately, but I keep one monitor without scaling so when I want to play I just launch the puzzles on that.

happa•6mo ago
For human-generated logic puzzles that you can solve in your browser, I can recommend the following site:

https://puzsq.logicpuzzle.app

tecleandor•6mo ago
As a note, after some years of playing with this puzzles, I recently discovered why its name sounded familiar to me... It's Simon Tatham from PuTTY (the Windows SSH client).
pbh101•6mo ago
Found this recently and have been loving it! The one that has stuck the most is Keen but Galaxies is a close second.
sogen•6mo ago
Galaxies and the Lights one are my main go to
NoboruWataya•6mo ago
Recommend the Android port as well, available on F-Droid: https://chris.boyle.name/projects/android-puzzles/
ZeroGravitas•6mo ago
Mostly works nicely on black and white android e-readers too.
ofrzeta•6mo ago
related: https://www.janko.at/Raetsel/index.htm huge collection of games and playable online (general desciptions are in German only but the rules of every game are translated in English and Japanese)
tangus•6mo ago
Also related: https://puzz.link/db/
Disposal8433•6mo ago
And another one: https://www.brainbashers.com/puzzles.asp
MITSardine•6mo ago
I've had this on my phone for years, it's a great collection of puzzles. I haven't tried them all (games on phones), but it's certainly the best I have. No ads, no useless gamification, but well polished and varied puzzles, and quite a bit of control over the difficulty.

My favourite has to be "Keen", it's a sudoku-like where a grid has to be filled with no repeated numbers on either columns or rows, and arbitrarily shaped cells must be filled to satisfy an arithmetic constraint like "sums to 7", "the product is 84" or "one divided by the other is 3" (if sized two).

Towers is nice too, similar concept (re repetition), but the constraints are now visibility ranges on the boundaries of the grid, as you put down towers of varying height. I find it more difficult.

Some of the games are more mechanical, where you can mindlessly iterate to a solution step by step. Like "Net" (rotate pipes to connect them all to the center). Towers takes some more guess work, and I find Keen is there in the middle.

kybernetikos•6mo ago
Net can be done with reasoning rather than mindless iteration. You start by locking in end points surrounded by other end points except for one free space. if you have a straight line that can connect two end points then you lock it in the other orientation. If a line is locked next to a T pipe, the back of the t pipe goes against the line. If a corner piece is next to a locked pipe, you know that the side opposite the incoming pipe is empty, so it could be the back of a T or the side of a line piece, etc.
MITSardine•6mo ago
Yeah, that's what I meant. On the other hand, something like Towers has you trying different configurations because there's not always enough information to motivate the next step.
MostlyStable•6mo ago
I haven't tried Towers, but I had thought that every game in his collection was such that guessing was never required. The logic/rules might not always be obvious, but supposedly they are there.
MITSardine•6mo ago
I think there's still a unique solution but, on the harder difficulties, you're given very little to work with. (in Towers)
sogen•6mo ago
I think some guessing is necessary if you select one of the custom difficulty settings
fsckboy•6mo ago
i only play Net (largest size or bigger, wrapping) using the locks; I disconnect the surrounding pipes from the center so nothing is lit up, and then start locking squares based on their surroundings. some of them I can't even solve. I can see the answer, but my head can't contain the logic necessary to lock them down
Jigsy•6mo ago
I like Solo (Sudoku), but that's hard to play on my phone sadly.

I end up doing hard modes of Flood and Signpost a lot, though.

V__•6mo ago
The same puzzles can be played here with a more friendly UI: https://medmunds.github.io/puzzles/
fsckboy•6mo ago
not exactly the same, the ux cleanup has dumbed some of them down a bit

I play the original untangle on 600 or higher, that "friendly" UI doesn't allow that

I play the original Dominosa 6-extreme but friendly doesn't offer that either, unless it's set them all to extreme

the Net doesn't not allow custom sizes, and it's also broken the mouse buttons, it only allows rotation in one direction

not going to look further into the vandalism

medmunds•6mo ago
Oh, that's my very much unfinished wasm version from 2013. It wasn't meant to be a "vandalized" or dumbed down version; I just stopped working on it because Simon released a much more complete wasm version on his own site around the same time.

I've recently started working on an updated PWA port that works offline and on touch devices, mainly because the iOS app hasn't been updated in years. (If you hunt around you can probably locate the work in progress, but it's not ready for critics yet. I'll post a link when it is.)

cbarrick•6mo ago
I discovered these as a child by just combing through the Ubuntu package repositories looking for games.

These days, I play the Android port all the time. It's my go-to to occupy my time on short flights.

insane_dreamer•6mo ago
Does anyone know of a collection of mini games like that with available source code, and preferably in a more approachable language than C? Thinking that something like this might be great for getting my 9-year interested in coding using a non-visual prog lang (so not Scratch).
glimshe•6mo ago
Teaching kids to program for over 40 years:

https://www.roug.org/retrocomputing/languages/basic/basicgam...

sogen•6mo ago
There’s also the source code available for Puzzles Reloaded that another HN user posted earlier.

Repo: https://teamswarner.com/puzzles/

npteljes•6mo ago
I love this collection on my phone. It's among the first software that I install to it. Alongside Simon's stuff, Gauguin is also a favorite. It's a sudoku type of game, but with different shapes and math instead of the basic sudoku rules. I love these when I have some time to kill, and I don't want to look at the internet.
privatelypublic•6mo ago
I absolutely love Flood type games- but I want huge maps(1000x1000 - 65535x65535). Alas, all of them also kill their playability by wanting absurd money ($5, ha!) and/or flow breaking ads.
merelysounds•6mo ago
If you’re on iOS:

- Puzzles[1] - includes these games and more (sudoku, nonograms, minesweeper, others).

- Nonoverse[2] - it’s just nonograms, but built by hand (not randomly generated); it’s my app, inspired by the above.

[1]: https://apps.apple.com/app/puzzles-reloaded/id6504365885

[2]: https://apps.apple.com/app/nonoverse-nonogram-puzzles/id6748...

zellyn•6mo ago
Oh nice! I play Loopy while listening to podcasts or sometimes watching Netflix, and the bugs causing right edge to require double long-hold and left edge to require fanatical precision always drive me nuts, so this is very welcome!

Any way to change the yellow to something tamer, and reduce the line widths slightly?

merelysounds•6mo ago
To clarify, only the second app is mine. I’m a fan of the “Puzzles” and the original from the current HN discussion. But I didn’t like that the nonograms (a.k.a Pattern) were random patterns and not pictures; so I built “Nonoverse” to address that.

Unfortunately I don’t know much about Loopy. If you want, this could be your sign to build your own version :)

jannniii•6mo ago
Thanks for sharing! Awesome new time sinkhole for my phone…
haunter•6mo ago
I actually might want to port this to homebrew Switch… Good summer project
patrickdavey•6mo ago
I love these puzzles. I find the cube rolling one just so hard to get my head around!
fsckboy•6mo ago
I got really good at the spatial reasoning a few years ago (not perfect though) but now I can't remember any of that and I'm back to n00b again
sogen•6mo ago
For me the Vampire one
wkat4242•6mo ago
We used to have these kinds of puzzles physically in the 80s. Little plastic pocket Chess boards etc with pieces that would stick in there with a Pin. Never thought of them until i read this :)
dfboyd•6mo ago
The iOS app is long-unmaintained and has bugs. It needs a new maintainer, but they need some kind of Apple developer account to actually get it in the app store.
rahimnathwani•6mo ago
Someone mentioned a different iOS version:

https://news.ycombinator.com/item?id=44695218

fsckboy•6mo ago
if somebody wants a "C lang/linux level" bug/puzzle to figure out (could be as simple as looking at the source), I just discovered it a couple days ago: if you use a large number to set up a board in untangle, the algo is extremely slow to set the board up, probably an O(N*2) or worse or something. You can see this slowness in the web version, put in a 600 or 2000

the bug: anyway, I was running the C version of the puzzle from cli (didn't want to slow my browser down) and I must have put a typo in for an even bigger number than I intended and the process went away for a long time. I got sick of looking at the little window and discovered that I couldn't kill it even with kill -9. I killed the window with xkill but the process was still chugging away in the background at 99% CPU.

I finally managed to kill it with htop but I have a sense that I didn't really kill it, I think it just finished whatever long ops it was doing.

I didn't test much more, but I did load up a board size 600 to play and confirmed while it was building the board, kill -9 didn't do anything, and after it finished it allowed me to play the game. the kill -9 was swallowed and gone.

drdec•6mo ago
This sounds like an OS or kill bug not a with the program. Sending `kill -9`, aka `kill -KILL` is supposed to terminate the process immediately without giving it the opportunity to catch the signal and respond. (This is why you should start with `kill -TERM` and only resort to `kill -KILL` if that does not work.)

So if the process is not terminated this is an OS or kill issue because the process itself is not given a chance to catch the signal.

fsckboy•6mo ago
even if it's an OS or kill bug, most processes do reliably get killed with -9 so it's something that this program is doing is where to look/how to reproduce.
drdec•6mo ago
It shouldn't matter what the program is doing or not, it's an OS (or kill) level bug. Even if you can make changes to the program so it doesn't happen, it's still an OS/kill level bug. The OS is supposed to terminate the process. A process is not supposed to be able to prevent the OS from doing that.
fsckboy•6mo ago
correct, and virtually all programs get killed. so what is this program doing that seems to uncover the bug?

"shouldn't" hides the flaw in your thinking, it is happening, that's the bug, so shouldn't is out the window

ranger207•6mo ago
Simon Tatham also wrote PuTTY, which was for the longest time the best SSH client on Windows (I don't use Windows anymore so I can't say if it still is or not). I can't find the quote now, but I remember him saying that between PuTTY and his puzzle collection, his contribution to human productivity was net zero
fhcbix•6mo ago
Given how many platforms these have been ported to, this really is the DOOM of puzzle apps. I've been using this PocketBook port on my e-reader for years: https://github.com/SteffenBauer/PocketPuzzles
sogen•6mo ago
Nice, I’d love to get one just to play it.and I guess battery life must be great.