Show HN: Linex – A daily challenge: placing pieces on a board that fights back https://ift.tt/sYrHVi5

Show HN: Linex – A daily challenge: placing pieces on a board that fights back Hi HN, I wanted to share a web game I’ve been building in HTML, JavaScript, MySQL, and PHP called LINEX. It is primarily designed and optimized to be played in the mobile browser. The idea is simple: you have an 8x8 board where you must place pieces (Tetris-style and some custom shapes) to clear horizontal and vertical lines. Yes, someone might think this has already been done, but let me explain. You choose where to place the piece and how to rotate it. The core interaction consists of "drawing" the piece tap-by-tap on the grid, which provides a very satisfying tactile sense of control and requires a much more thoughtful strategy. To avoid the flat difficulty curve typical of games in this genre, I’ve implemented a couple of twists: 1. Progressive difficulty (The board fights back): As you progress and clear lines, permanently blocked cells randomly appear on the board. This forces you to constantly adapt your spatial vision. 2. Tools to defend yourself: To counter frustration, you have a very limited number of aids (skip the piece, choose another one, or use a special 1x1 piece). These resources increase slightly as the board fills up with blocked cells, forcing you to decide the exact right moment to use them. The game features a daily challenge driven by a date-based random seed (PRNG). Everyone gets exactly the same sequence of pieces and blockers. Furthermore, the base difficulty scales throughout the week: on Mondays you start with a clean board (0 initial blocked cells, although several will appear as the game progresses), and the difficulty ramps up until Sunday, where you start the game with 3 obstacles already in place. In addition to the global medal leaderboard, you can add other users to your profile to create a private leaderboard and compete head-to-head just with your friends. Time is also an important factor, as in the event of a tie in cleared lines, the player who completed them faster will rank higher on the leaderboard. I would love for you to check it out. I'm especially looking for honest feedback on the difficulty curve, the piece-placement interaction (UI/UX), or the balancing of obstacles/tools, although any other ideas, critiques, or suggestions are welcome. https://ift.tt/c6sY7Bk Thanks! https://ift.tt/c6sY7Bk February 25, 2026 at 05:03AM

Show HN: Agent that matches sales reps with warm leads based on product usage https://ift.tt/vrs4p3i

Show HN: Agent that matches sales reps with warm leads based on product usage hey, I'm building a tool that: 1. analyzes your Posthog data 2. finds patterns that lead to plan upgrade/account expansion 3. creates a deal in your CRM whenever it sees it againg we've just launched a huge update. Beton now has MCP (my Claude Code is already connected), Firecrawl integration and onboarding that's easier to understand available in cloud and via AGPLv3 let us know if you need any help setting up PS it's also suitable if you want to send triggered push notifications or emails https://ift.tt/ApsLjwN February 25, 2026 at 11:39PM

Show HN: Chaos Monkey but for Audio Video Testing (WebRTC and UDP) https://ift.tt/BI16aA4

Show HN: Chaos Monkey but for Audio Video Testing (WebRTC and UDP) It takes an input video and converts it into H.264/Opus RTP streams that you can blast at your video call systems (WebRTC, SFUs, etc.). It also injects network chaos like packet loss, jitter, and bitrate throttling to see how things break It scales from 1 to n participants, depending on the compute and memory of the host system Best part? It’s packaged with Nix, so it builds the same everywhere (Linux, macOS, ARM, x86). No dependency hell It supports both UDP (with a relay chain for Kubernetes) and WebRTC (with containerized TURN servers). Chaos spikes can be distributed evenly, randomly, or front/back-loaded for different test scenarios. To change this, just edit the values in a single config file https://ift.tt/uCALcVG February 23, 2026 at 02:23PM

Show HN: MasqueradeORM – Memory Efficient Node ORM: Just Write Classes https://ift.tt/MVm5Hfg

Show HN: MasqueradeORM – Memory Efficient Node ORM: Just Write Classes https://ift.tt/GBNWtsT February 24, 2026 at 11:11PM

Show HN: Unlock the best engineering knowledge in papers for your coding agent https://ift.tt/WfM9hEJ

Show HN: Unlock the best engineering knowledge in papers for your coding agent https://ift.tt/rcd9EtU February 23, 2026 at 11:03PM

Show HN: AgentDbg - local-first debugger for AI agents (timeline, loops, etc.) https://ift.tt/lmFHUtZ

Show HN: AgentDbg - local-first debugger for AI agents (timeline, loops, etc.) AgentDbg is a local-first debugger for AI agents. It records structured runs (LLM calls, tool calls, state, errors) to JSONL and shows the timeline UI locally. There is no need for cloud, accounts, and no telemetry. Flow is as simple as: 1. Run an agent 2. `agentdbg view` 3. Inspect the timeline, loop warnings, errors, etc. v0.1 includes `@trace` and `traced_run`, recorders, loop detection, best-effort redaction (by default), local UI, export. I also started working on integrations: there is an optional LangChain/LangGraph callback. * Repo: https://ift.tt/LP52D6Y * Demo: `python examples/demo/pure_python` and then `agentdbg view` Would love feedback on: 1. Trace format 2. Integrations to prioritize in the next several days 3. What you would want for deterministic replay https://ift.tt/LP52D6Y February 23, 2026 at 11:14PM

Show HN: MuJoCo React https://ift.tt/nDZsrav

Show HN: MuJoCo React MuJoCo physics simulation in the browser using React. This is made possible by DeepMind's mujoco-wasm (mujoco-js), which compiles MuJoCo to WebAssembly. We wrap it with React Three Fiber so you can load any MuJoCo model, step physics, and write controllers as React components, all running client-side in the browser https://ift.tt/WNksA4o February 22, 2026 at 11:59PM

Show HN: DevBind – I made a Rust tool for zero-config local HTTPS and DNS https://ift.tt/Jls3nm0

Show HN: DevBind – I made a Rust tool for zero-config local HTTPS and DNS Hey HN, I got tired of messing with /etc/hosts and browser SSL warnings every time I started a new project. So I wrote DevBind. It's a small reverse proxy in Rust. It basically does two things: 1. Runs a tiny DNS server so anything.test just works instantly (no more manual hosts file edits). 2. Sits on port 443 and auto-signs SSL certs on the fly so you get the nice green lock in Chrome/Firefox. It's been built mostly for Linux (it hooks into systemd-resolved), but I've added some experimental bits for Mac/Win too. Still a work in progress, but I've been using it for my own dev work and it's saved me a ton of time. Would love to know if it breaks for you or if there's a better way to handle the networking bits! https://ift.tt/JsdVhUL February 22, 2026 at 01:49AM

Show HN: Museum of Handwritten Code (If, While, Binary Search, Merge Sort) https://ift.tt/4sDyK2x

Show HN: Museum of Handwritten Code (If, While, Binary Search, Merge Sort) Hi HN - this is a small experiment: what if code had a museum? I built a Museum of Handwritten Code for foundational constructs and algorithms. I’ve been feeling a strange melancholy watching more and more software generation become automated, and wanted to preserve the "atoms" of programming in a form people can browse, discuss, and (hopefully) learn from. Yes, it’s a vanity project — but I’m trying to make each exhibit real: code, description, and historical context (with more being added over time). If AI increasingly writes the software stack (and maybe one day much closer to machine code), then here’s to the for-loops, if-branches, and hash maps that helped build the world we live in. Cheers! I’d love brutal feedback on whether this feels: * interesting * useful * too gimmicky * or actually a decent teaching / history format https://museum.codes February 22, 2026 at 02:00AM

Show HN: Winslop – De-Slop Windows https://ift.tt/JPTBtHV

Show HN: Winslop – De-Slop Windows https://ift.tt/GSQryTJ February 22, 2026 at 01:26AM

Show HN: HelixDB Explorer – A macOS GUI for HelixDB https://ift.tt/RQAkhiI

Show HN: HelixDB Explorer – A macOS GUI for HelixDB https://ift.tt/ySEvPGW February 20, 2026 at 11:18PM

Show HN: A small, simple music theory library in C99 https://ift.tt/8Xb75DL

Show HN: A small, simple music theory library in C99 https://ift.tt/NpKdaE5 February 20, 2026 at 04:24AM

Show HN: Hi.new – DMs for agents (open-source) https://ift.tt/GJpWvuR

Show HN: Hi.new – DMs for agents (open-source) https://www.hi.new/ February 20, 2026 at 02:50AM

Show HN: Astroworld – A universal N-body gravity engine in Python https://ift.tt/FctZTqp

Show HN: Astroworld – A universal N-body gravity engine in Python I’ve been working on a modular N-body simulator in Python called Astroworld. It started as a Solar System visualizer, but I recently refactored it into a general-purpose engine that decouples physical laws from planetary data.Technical Highlights:Symplectic Integration: Uses a Velocity Verlet integrator to maintain long-term energy conservation ($\Delta E/E \approx 10^{-8}$ in stable systems).Agnostic Architecture: It can ingest any system via orbital elements (Keplerian) or state vectors. I've used it to validate the stability of ultra-compact systems like TRAPPIST-1 and long-period perturbations like the Planet 9 hypothesis.Validation: Includes 90+ physical tests, including Mercury’s relativistic precession using Schwarzschild metric corrections.The Planet 9 Experiment:I ran a 10k-year simulation to track the differential signal in the argument of perihelion ($\omega$) for TNOs like Sedna. The result ($\approx 0.002^{\circ}$) was a great sanity check for the engine’s precision, as this effect is secular and requires millions of years to fully manifest.The Stack:NumPy for vectorization, Matplotlib for 2D analysis, and Plotly for interactive 3D trajectories.I'm currently working on a real-time 3D rendering layer. I’d love to get feedback on the integrator’s stability for high-eccentricity orbits or suggestions on implementing more complex gravitational potentials. https://ift.tt/Ee0cjKS February 20, 2026 at 01:27AM