The 29th International Obfuscated C Code Contest (IOCCC) 2025 Winners

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IOCCC29 had a high submission quality and similar volume to last year, possibly due to improved website design and social media presence. The contest's rules and guidelines were rewritten for this year, and the next contest, IOCCC30, is planned for late 2026.

I design with Claude more than Figma now

https://blog.janestreet.com/i-design-with-claude-code-more-than-figma-now-index/figma-to-claude-hero.png
The author was initially skeptical of LLMs but found them indispensable at Jane Street, especially for tasks they were not good at. They now use LLMs to create prototype features that exactly match their design ideas, freeing up time for iteration and refinement.

Valve P2P networking broken for more than 2 months

https://opengraph.githubassets.com/c2d71f3d86cfcf2495c70dc0db549513166ac8cf7d38f991af1e7872e1a43ff4/ValveSoftware/GameNetworkingSockets/issues/398
Steam Networking has a major issue affecting Israeli players in P2P games since 13/03, causing high ping rates around 120ms. The issue is specific to Steam Networking and doesn't occur in non-Steam games or cross-play with non-PC platforms.

Field of clones: How horse replicas came to dominate polo

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Adolfo Cambiaso, a renowned polo player, pioneered horse cloning in 2006 to preserve his exceptional horses' genetics. He successfully cloned his flagship mare Cuartetera, leading to La Dolfina's unprecedented dominance in polo.

Tokenomics: Quantifying Where Tokens Are Used in Agentic Software Engineering

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Researchers analyzed token consumption in LLM-MA systems across software development stages. They found Code Review accounts for 59.4% of token consumption, with input tokens making up 53.9% of total consumption.

Harness engineering: Leveraging Codex in an agent-first world

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We used Codex to generate a million lines of code for a software product in 5 months with a team of 7 engineers, achieving an average throughput of 3.5 PRs per engineer per day. To maintain the codebase, we focused on designing environments, scaffolding, and feedback loops that enable agents to do reliable work, enforcing invariants and mechanical rules to keep the codebase legible and consistent.

Ntsc-rs – open-source video emulation of analog TV and VHS artifacts

https://ntsc.rs/assets/images/dMI5kPlcVt-400.webp
ntsc-rs is a free, open-source Rust effect that accurately emulates analog TV and VHS artifacts. It's multithreaded, SIMD-accelerated and available as a standalone, web app, and plugin for various video editing software.

Public Domain Image Archive

https://images.pdimagearchive.org/pdia/main-opengraph.jpg
Explore our hand-picked collection of 11,082 out-of-copyright works, free for all to browse, download, and reuse. This is a living database with new images added every week.

Symbolica 2.0: Programmable Symbols for Python and Rust

Symbolica 2.0 is a high-performance symbolic computation framework with programmable symbols, improved ergonomics, and faster performance. It supports multiple numerical domains, including double-float arithmetic and JIT compilation.

Human-Like Neural Nets by Catapulting

https://gwern.net/doc/reinforcement-learning/model-free/2008-12-07-rogerjohansson-geneticprogrammingevolutionofmonalisa-figure1-2x2subset-scalingoptimization3oomsshowsimprovementinrenderingmonalisawith50semitransparentpolygons.png
The author proposes a new scaling paradigm for deep learning, suggesting that human brains and neural networks (NNs) differ in their bias-variance tradeoff, with human brains minimizing bias and NNs minimizing variance. This difference could explain various anomalies in machine and biological intelligence, such as the need for large datasets and compute in NNs, the lack of transfer learning ...

My Software North Star

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Software should be useful, correct, maintainable, and efficient to maximize end user utility. Developer experience is secondary, serving only to deliver software that is loved by users.

How Liminalism Became the Defining Aesthetic of Our Time

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Liminalism is an internet art movement that explores abandoned, empty spaces, evoking feelings of nostalgia, lostness, and uncertainty. This aesthetic is a reflection of our current moment, characterized by anonymity, alienation, and anxiety, and is often associated with the concept of the "Backrooms."

Show HN: Oproxy – inspect and modify network traffic from the browser

https://raw.githubusercontent.com/sauravrao637/oproxy/master/docs/assets/sessions-screenshot.png
oproxy is a local proxy for inspecting and modifying traffic, allowing developers to test and debug applications. It supports various features like rule sets, mock responses, and upstream proxy chaining.

Introducing Boron Buckyballs: Theory that B80 cages can’t be made is disproved

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Chemists have observed a boron buckminsterfullerene for the first time, providing evidence for an 80-atom cage structure. This discovery challenges density functional theory and may lead to new materials such as semiconductors or superconductors.

Biohub releases a world model of protein biology

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Biohub released a world model of protein biology, a scientific engine for prediction, design, and discovery that can map proteins and design new binders. The engine, ESMFold2, can predict protein structures and design binders in days, accelerating early therapeutic discovery.

Moving beyond fork() + exec()

A recent Linux kernel proposal to add "spawn templates" to optimize the fork() and exec() pattern has been rejected, but it may point to a new process-creation primitive in the future. The discussion highlights the need for a better process-creation mechanism, with some suggesting a native implementation of posix_spawn() and others proposing alternative approaches using existing system calls.

Meta confirms 1000s of Instagram accounts were hacked by abusing its AI chatbot

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Meta notified 20,225 people whose Instagram accounts were hijacked through a flaw in its AI chatbot, allowing hackers to access account information and posts. The breach occurred from April 17 to this week, with Meta disabling the chatbot and instructing users to reset their passwords.

Nvidia is proposing a beast of a CPU system for Windows PCs

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Zeroserve: A zero-config web server you can script with eBPF

zeroserve is a fast, zero-config HTTPS server that serves websites from a single tarball and supports eBPF scripting for middleware and proxying. It beats nginx in serving small files and has a faster proxying path.

Show HN: Free animated icon library for Vue

https://respeak-io.github.io/lucide-motion-vue/preview.png
The largest animated icon library for Vue 3. 535 Lucide icons, drop-in and tree-shakeable, with hover, tap, and in-view triggers and a live gallery.

Sem: New primitive for code understanding – not LSPs, but entities on top of Git

Rohan made changes to the code, adding and modifying functions, and deleting another. The changes affect 42 entities, including the loginRoute and authMiddleware, due to dependencies on db.findUser and rateLimiter.

Google to pay SpaceX $920M a month for compute capacity at xAI data centers

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SpaceX has signed a deal with Google to provide AI compute capacity for $920 million a month until June 2029. The agreement allows Google to end the deal if SpaceX fails to deliver the committed amount of GPUs by September 30, 2026.

An Ohio Valley 100k-Watt FM Signal Is Severed in Broad Daylight – Radio World

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Mike Kirtner, president of Kindred Communications, reported an FM transmission line was cut in broad daylight at 93.7 WDGG(FM) in Ashland, Ky. The station is operating at reduced power and estimates total repair costs between $70,000 and $100,000.

Show HN: TakoVM – Isolated model and tool execution used by enterprises

https://raw.githubusercontent.com/las7/TakoVM/main/assets/logo.png
tako-vm is a tool for running AI-generated code in isolated Docker containers with optional gVisor sandboxing. It includes job queues, retries, and execution history, and can be installed and run with various commands.

The circus freaks of open source

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The user discusses two examples of individuals, Terry A. Davis and Kent Overstreet, who created notable projects but struggled with mental health issues and were subsequently harassed and ridiculed online. The user argues that it's essential to approach these situations with compassion and respect for individuals' privacy, rather than sensationalizing their struggles or participating in ...

Ask HN: What was your "oh shit" moment with GenAI?

The user initially dismissed AI models like DALL-E and ChatGPT as parlor tricks but had a series of "Oh shit" moments as they realized the potential of these models to solve real problems and change their approach to development. These moments included using Claude code to generate a Zillow description, building a web tool to sort media files, and using AI to translate code and track down ...

Pokemon Emerald Ported to WebAssembly (100k FPS)

Keyboard: arrows, Z=A, X=B, Enter=Start, Shift=Select.

Motorola effectively bricked its entire line of WiFi routers without explanation

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Motorola's MotoSync+ app has been down for nearly a month, preventing users from setting up and using their WiFi routers. The issue has left many customers without access to their routers, with some unable to even factory reset their devices.

Unicode Fonts and Tools for X11

https://www.cl.cam.ac.uk/~mgk25/ucs-fonts.gif
X11 fonts have been extended to include ISO 10646-1 Unicode characters, with new fonts and revised versions of existing fonts available. However, X11 was not designed to handle complex scripts like Arabic, Syriac, and Indic, requiring special libraries like Pango to support these scripts.

Show HN: Infinite canvas notes in the non-Euclidean Poincaré disk

The demo allows users to view multiple notes at once with tools and mode switching available. It was created using LLM tools due to the author's lack of mathematical background.