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Top stories from https://news.ycombinator.com (with 100+ score) Contribute to the development here: https://github.com/phil-r/hackernewsbot Also check https://t.me/designer_news Contacts: @philr
Show HN: OffChess – 100k+ Offline, Ad-Free Chess Puzzles App (Score: 153+ in 4 hours)
Link: https://readhacker.news/s/6xpws
Comments: https://readhacker.news/c/6xpws
Hi HN!
I'm the developer of rdx, a mildly popular ad-free, privacy and user friendly Reddit client. This time, I made something for a very specific use case: solving chess puzzles with no internet.
Why? Well, my Wi-Fi is terrible in the bathroom—and that's where I do some of my best thinking. I tried printing out “mate in X” puzzles to solve offline, but they weren’t fun without interaction. So I built OffChess.
OffChess is an iPhone/Android app that contains over 100,000 chess puzzles, fully offline and completely ad-free. You can solve puzzles by category (Mate in 1/2/3/4/5, tactics like pins/forks/skewers, or openings like Sicilian/French, etc). You gain or lose points based on how you perform, so there's a light rating system to keep things engaging.
No accounts, no tracking, no monthly subscriptions, no internet required. Just pure, old-school tactical chess training, wherever you are.
You can check out the iPhone/iPad app at https://apps.apple.com/us/app/chess-puzzles-offchess/id67447... or the Android app at https://play.google.com/store/apps/details?id=com.offchess
Would love feedback, bug reports, or suggestions.
Thanks!
Lightfastness Testing of Colored Pencils (❄️ Score: 151+ in 3 days)
Link: https://readhacker.news/s/6xe6T
Comments: https://readhacker.news/c/6xe6T
The chemical secrets that help keep honey fresh for so long (❄️ Score: 150+ in 3 days)
Link: https://readhacker.news/s/6xcpP
Comments: https://readhacker.news/c/6xcpP
The Miyawaki Method of micro-forestry (❄️ Score: 150+ in 3 days)
Link: https://readhacker.news/s/6xeMY
Comments: https://readhacker.news/c/6xeMY
Show HN: NYC Subway Simulator and Route Designer (Score: 150+ in 16 hours)
Link: https://readhacker.news/s/6xm4N
Comments: https://readhacker.news/c/6xm4N
Hello HN!
As a long term NYC resident, I have read countless articles on ideas tweaking subway services, but always found them hard to follow without visual aid. So over the long weekend I decided to build one. It has all the basic features: trains would spawn at their origin, stop at stations, and slow down if it gets too close to another. You can also design custom routes by piecing tracks together.
Have fun, and let me know what you think!
BBC staff: we're forced to do pro-Israel PR (🔥 Score: 157+ in 52 minutes)
Link: https://readhacker.news/s/6xnUr
Comments: https://readhacker.news/c/6xnUr
Hymn to Babylon, missing for a millennium, has been discovered (❄️ Score: 150+ in 3 days)
Link: https://readhacker.news/s/6xbDU
Comments: https://readhacker.news/c/6xbDU
François Chollet: The Arc Prize and How We Get to AGI [video] (❄️ Score: 151+ in 4 days)
Link: https://readhacker.news/s/6x9Lr
Comments: https://readhacker.news/c/6x9Lr
Show HN: Piano Trainer – Learn piano scales, chords and more using MIDI (❄️ Score: 151+ in 2 days)
Link: https://readhacker.news/s/6xdNy
Comments: https://readhacker.news/c/6xdNy
Adding a feature because ChatGPT incorrectly thinks it exists (🔥 Score: 151+ in 1 hour)
Link: https://readhacker.news/s/6xmdr
Comments: https://readhacker.news/c/6xmdr
Anthropic cut up millions of used books, and downloaded 7M pirated ones – judge (Score: 150+ in 6 hours)
Link: https://readhacker.news/s/6xkkv
Comments: https://readhacker.news/c/6xkkv
Neanderthals operated prehistoric “fat factory” on German lakeshore (❄️ Score: 151+ in 3 days)
Link: https://readhacker.news/s/6xbtu
Comments: https://readhacker.news/c/6xbtu
LLMs should not replace therapists (Score: 151+ in 16 hours)
Link: https://readhacker.news/s/6xj2R
Comments: https://readhacker.news/c/6xj2R
Async Queue – One of my favorite programming interview questions (Score: 151+ in 18 hours)
Link: https://readhacker.news/s/6xinU
Comments: https://readhacker.news/c/6xinU
Hannah Cairo has solved the Mizohata-Takeuchi conjecture (🔥 Score: 162+ in 2 hours)
Link: https://readhacker.news/s/6xi9t
Comments: https://readhacker.news/c/6xi9t
We're not innovating, we're just forgetting slower (❄️ Score: 150+ in 3 days)
Link: https://readhacker.news/s/6xcPw
Comments: https://readhacker.news/c/6xcPw
My first verified imperative program (Score: 150+ in 16 hours)
Link: https://readhacker.news/s/6xmPC
Comments: https://readhacker.news/c/6xmPC
Conversations with a hit man (❄️ Score: 150+ in 6 days)
Link: https://readhacker.news/s/6x36F
Comments: https://readhacker.news/c/6x36F
Speeding up PostgreSQL dump/restore snapshots (❄️ Score: 150+ in 2 days)
Link: https://readhacker.news/s/6xfJA
Comments: https://readhacker.news/c/6xfJA
Solving Wordle with uv's dependency resolver (❄️ Score: 150+ in 2 days)
Link: https://readhacker.news/s/6xgx8
Comments: https://readhacker.news/c/6xgx8
Launch HN: Morph (YC S23) – Apply AI code edits at 4,500 tokens/sec (Score: 152+ in 11 hours)
Link: https://readhacker.news/c/6xm9H
Hey HN, I’m Tejas at Morph. We’ve built a blazing-fast model for applying AI-generated code edits directly into your files at 4,500+ tokens/sec. No more slow full-file rewrites or brittle search-and-replace hacks.
Here's a demo video: https://www.youtube.com/watch?v=LdT8epGHJPk.
Why? AI spits out code that can’t reliably be inserted into existing code. Full file rewrites, brittle search-and-replace hacks are too slow, expensive, or error-prone.
Morph's approach:
- Your agent outputs edits “lazily”, referencing unmodified lines in the existing file (ex: // ...existing code...)
- Morph instantly applies these edits to a file using our Fast Apply model + speculative decoding against the original file, making AI patches fast, reliable, and production-ready.
This approach was pioneered by Cursor last year, but their models aren’t available as APIs—so we built Morph for developers everywhere (with a large free tier!)
Live demo (no signup): https://morphllm.com/dashboard and docs: https://docs.morphllm.com/quickstart
We have 2 Fast Apply models: morph-v3-fast - 4500+ tok/sec, and morph-v3-large - 2500+ tok/sec. These models power Fast Apply at create.xyz, databutton, continue.dev, and more!
We also provide retrieval models for embedding + reranking.
Next Up: Inline Edit Model (Cmd-K): Extremely fast inline edits - keep dev flow state; and Morph Tab API: Our Next Edit Prediction model guesses your next code edit + action with sub-500ms latency. It's currently in private beta, but you can request early access here: https://morphllm.com/tab
Hot takes:
1) Raw inference speed matters more than incremental accuracy gains for dev UX—agree or disagree?
2) Full-file rewrites by frontier models are legacy—Fast Apply edits win on speed, cost, reliability.
3) As benchmarks on narrow tasks saturate to 99%+, complexity is shifting from single frontier models to specialized inference-optimized models. As frontier models move upmarket, they'll leave simple tasks behind, and they'll be used to do tasks only frontier models can do
We’d love to hear your ideas and experiences with coding agents!
New sphere-packing record stems from an unexpected source (🔥 Score: 150+ in 3 hours)
Link: https://readhacker.news/s/6xmTn
Comments: https://readhacker.news/c/6xmTn
When Figma starts designing us (Score: 150+ in 1 day)
Link: https://readhacker.news/s/6xhwQ
Comments: https://readhacker.news/c/6xhwQ
I used o3 to profile myself from my saved Pocket links (Score: 152+ in 4 hours)
Link: https://readhacker.news/s/6xkNM
Comments: https://readhacker.news/c/6xkNM
Colombia seizes first unmanned narco-submarine with Starlink antenna (Score: 150+ in 1 day)
Link: https://readhacker.news/s/6xgUT
Comments: https://readhacker.news/c/6xgUT
Mercury: Ultra-Fast Language Models Based on Diffusion (🔥 Score: 156+ in 3 hours)
Link: https://readhacker.news/s/6xkLL
Comments: https://readhacker.news/c/6xkLL
What every programmer should know about how CPUs work [video] (❄️ Score: 152+ in 3 days)
Link: https://readhacker.news/s/6xaWS
Comments: https://readhacker.news/c/6xaWS
Building a Mac app with Claude code (Score: 151+ in 22 hours)
Link: https://readhacker.news/s/6xi6G
Comments: https://readhacker.news/c/6xi6G
I extracted the safety filters from Apple Intelligence models (🔥 Score: 159+ in 2 hours)
Link: https://readhacker.news/s/6xiMX
Comments: https://readhacker.news/c/6xiMX
I managed to reverse engineer the encryption (refered to as “Obfuscation” in the framework) responsible for managing the safety filters of Apple Intelligence models. I have extracted them into a repository. I encourage you to take a look around.
What a Hacker Stole from Me (Score: 151+ in 10 hours)
Link: https://readhacker.news/s/6xgsm
Comments: https://readhacker.news/c/6xgsm