1D Chess

1d-chess is a simplified chess variant where white plays against an AI. Assuming optimal play, white has a forced win by checkmating the enemy king.

Chimpanzees in Uganda locked in vicious 'civil war', say researchers

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Chimpanzees at Uganda's Kibale National Park have been locked in a civil war for 8 years with 24 killings, including 17 infants. Researchers say the conflict may inform how early human conflict developed and highlights the danger of group divisions.

WireGuard makes new Windows release following Microsoft signing resolution

Jason Donenfeld released updated WireGuard for Windows and WireGuardNT with new features, bug fixes, and performance improvements. Users can update via the built-in updater or download the latest version from the WireGuard website.

Industrial design files for Keychron keyboards and mice

https://raw.githubusercontent.com/Keychron/Keychron-Keyboards-Hardware-Design/main/docs/assets/hero-keychron-hardware-design.jpg
Keychron shares production CAD files for compatible accessories and educational use. Users can study and remix designs, but not copy or sell Keychron products.

Watgo – A WebAssembly Toolkit for Go

https://eli.thegreenplace.net/images/2026/watgo-diagram.png
watgo is a WebAssembly Toolkit for Go that parses WAT, validates, and encodes WASM binaries. It uses wasmir for semantic representation and has a CLI and Go API.

Show HN: FluidCAD – Parametric CAD with JavaScript

https://fluidcad.io/img/logo.png
The feature allows non-destructive editing and modeling with various operations such as extrusion and mirroring. It supports CAD tools and imports/export designs with color support.

Helium Is Hard to Replace

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Helium supply chain disruptions due to the war in Iran have caused prices to spike and shortages to loom, with many industries struggling to find substitutes for the essential gas. Helium's unique properties make it crucial for various applications, including MRI machines, semiconductor manufacturing, and fiber optic cable production.

AI assistance when contributing to the Linux kernel

https://opengraph.githubassets.com/0fed47c9ef095c1ae9caf4cab9b51df2c9ef4fdd0dd30fff84c66d85130516b9/torvalds/linux
AI tools cannot add Signed-off-by tags, only humans can certify the DCO. Contributions from AI tools should include an Assisted-by tag for proper attribution.

JSON Formatter Chrome Plugin Now Closed and Injecting Adware

https://opengraph.githubassets.com/2a8a44c8ffa5865c90c2dd31d9d74944ca636cb533df2d8d65121056bf1d32eb/callumlocke/json-formatter
JSON Formatter is now closed-source and commercial, but the final open source version, JSON Formatter Classic, remains available for use. It provides a simple, local-only JSON-formatting extension with no updates.

Launch HN: Twill.ai (YC S25) – Delegate to cloud agents, get back PRs

https://twill.ai/landing_assets/code-file.avif
Twill automates coding tasks, allowing developers to focus on high-priority work. It streamlines workflows, enabling teams to ship more and context-switch less.

What is RISC-V and why it matters to Canonical

https://ubuntu.com/wp-content/uploads/c26a/Isometric-One-logo.png
RISC-V is an open standard ISA with growing interest and adoption, offering flexibility and innovation in hardware and business models. Canonical supports RISC-V with Ubuntu, providing LTS versions and specific support for silicon partners.

CPU-Z and HWMonitor compromised

https://regmedia.co.uk/2021/04/13/malware.jpg
CPUID website briefly exposed visitors to malware after attackers hijacked its backend, turning trusted download links into malicious ones. The issue has been fixed, but users who clicked on compromised links may have downloaded malware targeting browser data and credentials.

Bild AI (YC W25) Is Hiring a Founding Product Engineer

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Bild AI is a construction tech startup that uses AI and CV to make blueprint reading, cost estimation, and permit applications more efficient. The company is looking for a full-stack engineer to own features, work with customers, and build a user-friendly product.

Bluesky April 2026 Outage Post-Mortem

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Bluesky experienced an 8-hour outage on Monday due to a memcached port exhaustion issue caused by a new internal service that sent large batches of requests without proper concurrency limits. The team eventually fixed the issue by expanding the client IP+port space, but not before experiencing a death spiral of port exhaustion and OOMs due to excessive logging and aggressive tuning of GOGC ...

You can't trust macOS Privacy and Security settings

https://eclecticlight.co/wp-content/uploads/2026/04/insenticon.jpg?w=1024
The user demonstrates how an app can gain access to a protected folder on macOS despite being listed as restricted in Privacy & Security settings. This is achieved by using the app to access the folder through an Open and Save Panel, which bypasses the need for user consent and allows the app to retain permanent access to the folder.

Clojure on Fennel Part One: Persistent Data Structures

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The user created a library called fennel-cljlib that brought Clojure features to the Lua runtime, but it had performance issues due to its copy-on-write approach. They then created a new library called immutable.fnl with a Persistent HAMT implementation, which improved performance and allowed for the development of a Clojure-to-Fennel compiler called ClojureFnl.

Show HN: A WYSIWYG word processor in Python

https://codeberg.org/chrisecker/miniword/raw/branch/main/screenshots/miniword_10apr26.png
This project is licensed under the GNU General Public License v3.0 – see LICENSE for details. Contact me if you need something else.

Nowhere Is Safe

https://i0.wp.com/steveblank.com/wp-content/uploads/2026/04/Ukraine-anti-drone-netting.jpg?resize=468%2C255&ssl=1
The US is facing a new threat from low-cost drones that can overwhelm air defense systems. To counter this, the US needs to rethink its approach to force protection and infrastructure protection.

The difficulty of making sure your website is broken

https://letsencrypt.org/images/language-icon128px-black.png
The author created a Go program to manage test certificates for a Certificate Authority, specifically to host websites with revoked or expired certificates, which is a tricky task. The program uses Lego to request certificates, checks for revocation, and waits for the correct certificate state before serving it to the webserver.

The best seat in town

https://storage.ghost.io/c/a1/84/a184b452-9b25-4b15-8c4f-4a1ffc8adb6b/content/images/2026/04/IMG_1862.jpeg
Paris's self-cleaning public toilets are efficient and convenient, used 200 times a day, and now found in 28 countries worldwide. LA's public bathroom program has only built 14 free-standing toilets, which are currently closed, highlighting the city's need for better infrastructure.

Mysteries of Dropbox: Testing of a Distributed Sync Service (2016) [pdf]

Researchers developed a formal model of file synchronizer behavior using Quviq QuickCheck, a testing framework that generates random test cases. The model was used to test Dropbox, Google Drive, and ownCloud, exposing unexpected behavior in two out of three systems, including situations where data could be lost.

A compelling title that is cryptic enough to get you to take action on it

https://ericwbailey.website/img/posts/a-compelling-title-that-is-cryptic-enough-to-get-you-to-take-action-on-it/hero-image.svg
The text outlines a structured approach to writing a comprehensive article, breaking down complex topics into manageable sections and using transitional paragraphs to guide the reader. This approach helps to establish trust with the reader and provides a clear, step-by-step explanation of the topic at hand.

FBI used iPhone notification data to retrieve deleted Signal messages

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The FBI recovered deleted Signal messages from an iPhone by extracting data from the device's notification database. The messages were preserved in internal memory due to the defendant's iPhone settings and iOS's data caching capabilities.

HBO Obtains DMCA Subpoena to Unmask 'Euphoria' Spoiler Account on X

https://torrentfreak.com/images/euphoria-600x383.png
HBO's parent company Warner Bros. Discovery sent a DMCA notice to X for spoilers of unaired Euphoria episodes. X was ordered to share account information to identify the person behind the infringing account.

DOJ Top Antitrust Litigators Exit After Ticketmaster Accord

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Penguin 'Toxicologists' Find PFAS Chemicals in Remote Patagonia

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Scientists used leg bands with chemical sensors on 54 Magellanic penguins to detect pollutants in their environment. The study found PFAS in over 90% of the bands, revealing exposure to pollutants in a remote region.

DOJ Wants to Scrap Watergate-Era Rule That Makes Presidential Records Public

https://theintercept.com/wp-content/uploads/2026/04/GettyImages-1258566797_55e0de.jpg?fit=3000%2C2651
Lauren Harper criticizes the Department of Justice's opinion that grants Trump a license to steal American history by claiming the Presidential Records Act is unconstitutional. This move threatens transparency and accountability in the presidency.

Deterministic Primality Testing for Limited Bit Width

The Miller-Rabin primality test was improved upon by Agrawal, Kayal, and Saxena in 2002 with a deterministic polynomial-time algorithm. Deterministic Miller-Rabin can be used for fast primality testing with a tunable parameter to increase correctness.

A new trick brings stability to quantum operations

https://ethz.ch/en/news-and-events/eth-news/news/2026/04/a-new-trick-brings-stability-to-quantum-operations/_jcr_content/articleLeadImage/image.imageformat.carousel.1623848018.jpg
Researchers at ETH Zurich have developed a highly stable swap gate for neutral atom qubits using geometric phases. This robust gate can be applied to 17,000 qubits simultaneously with a precision of over 99.9 percent.

RSoC 2026: A new CPU scheduler for Redox OS

https://www.redox-os.org/img/logo.png
Akshit Gaur modernized Redox OS's process scheduling subsystem by replacing Round Robin with Deficit Weighted Round Robin, allowing priority assignment.