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Show HN: Blunderless, a chess board vision trainer

https://blunderless.com
2•evanletz•5h ago
Hey HN! This week I released Blunderless, a board vision trainer for chess.

I’ve been playing nonstop lately, and too often I’m still making stupid mistakes like moving the only defender of my piece and leaving it hanging, walking into stalemate, or not seeing forks.

So I built a super simple and fast exercise site to help train my eyes and prevent these silly mistakes. Simpler than chess(.)com’s puzzles, track your win/loss on each exercise, no sign up required.

I definitely want to continue adding exercises, so if you have suggestions let me know!

Two-step system makes plastic from carbon dioxide, water and electricity

https://phys.org/news/2025-06-plastic-carbon-dioxide-electricity.html
1•PaulHoule•15s ago•0 comments

Show HN: Interactive CV – Real-time resume editor with ATS-optimized templates

https://www.interactive-cv.com/en
1•AIHiredMe•20s ago•0 comments

The Only Important Technology Is the Internet

https://kevinlu.ai/the-only-important-technology-is-the-internet
1•swyx•33s ago•0 comments

Telnyx launches built-in testing for AI Agents

1•maevesentner•40s ago•0 comments

The Funniest, Most Brutally Honest Comments Ever Left in Source Code

https://medium.com/javarevisited/the-funniest-most-brutally-honest-comments-ever-left-in-source-code-c8c41a0f0be1
1•ibobev•1m ago•0 comments

No Kid Zone

https://en.wikipedia.org/wiki/No_kid_zone
1•rickcarlino•1m ago•0 comments

Why Americans Can't Buy the Best Electric Car

https://www.nytimes.com/2025/07/08/opinion/byd-china-car-ev.html
3•standeven•10m ago•1 comments

The Ghost in the Ice Cream Machine (2020)

https://gizmodo.com/the-ghost-in-the-ice-cream-machine-1844339832
2•lapetitejort•11m ago•0 comments

Recursive Symbolic Identity Has Already Emerged

https://substack.com/home/post/p-167937462
2•schwarmhilda•13m ago•1 comments

A Typology of Canadianisms

https://dchp.arts.ubc.ca/how-to-use
4•gnabgib•15m ago•0 comments

Cerebras Enables Notion to Deliver Real-Time Enterprise Search for 100M+ Users

https://siliconcanals.com/cerebras-enables-notion-to-deliver-real-time-enterprise-search-for-100-million-workspace-users/
1•rbanffy•16m ago•0 comments

OCD's Origins Might Not Lie in the Brain Like We Thought

https://www.sciencealert.com/ocds-origins-might-not-lie-in-the-brain-like-we-thought
1•bilsbie•16m ago•0 comments

Longer wavelengths in sunlight pass through improves vision

https://www.nature.com/articles/s41598-025-09785-3
1•bilsbie•17m ago•0 comments

Multi-Region Row Level Security in CockroachDB

https://www.cockroachlabs.com/blog/fine-grained-access-control-row-level-security/
3•rusticwizard•17m ago•0 comments

Microdosing Willpower: My Takeaways from Microdosing Ozempic

https://substack.com/home/post/p-167852405
3•jxmorris12•18m ago•0 comments

Biotech investor Concentra Bio buys 4 Bay Area firms on brink of collapse

https://www.sfgate.com/tech/article/fund-gobbling-bay-area-biotech-20761986.php
1•randycupertino•19m ago•0 comments

Regular Expression Matching Can Be Simple and Fast (2007)

https://swtch.com/~rsc/regexp/regexp1.html
2•malingo•20m ago•0 comments

Mint 0.26.0 Released

https://mint-lang.com/news/exporting-entities
1•gdotdesign•21m ago•0 comments

SEC's 'crypto mom' says tokenized securities are still securities

https://www.aol.com/secs-crypto-mom-says-tokenized-201203237.html
1•Bluestein•24m ago•1 comments

Now I Won That AI Bet

https://www.astralcodexten.com/p/now-i-really-won-that-ai-bet
1•paulpauper•25m ago•0 comments

Balsa Update: Springtime in DC

https://thezvi.substack.com/p/balsa-update-springtime-in-dc
1•paulpauper•25m ago•0 comments

White Noise – secure and private messenger

https://www.whitenoise.chat/
2•onhacker•26m ago•0 comments

Gemini on Google Pixel Watch

https://support.google.com/googlepixelwatch/answer/16393978?hl=en
1•kaycebasques•26m ago•0 comments

Generating prototypes from game design document with Cursor, Zed and LÖVE

https://blog.luden.io/generating-prototypes-from-game-design-document-with-cursor-zed-and-l%C3%B6ve-7b8d932194d7
2•gamescodedogs•27m ago•5 comments

GlobalFoundries to Acquire MIPS

https://liliputing.com/globalfoundries-to-acquire-mips-bringing-together-risc-v-chip-design-and-manufacturing/
1•t-3•27m ago•0 comments

Developing Structural Analysis Tooling for Experimental Aircraft

https://stanleywang.dev/experience/beta-case-study
1•twinfantasyfan•27m ago•0 comments

Agents Are Controllers: Active Agent Brings MVC to AI in Rails

https://www.activeagents.ai/blog/agents-are-controllers-active-agent-brings-mvc-to-ai-in-rails
1•mooreds•29m ago•0 comments

Slow Projects

https://michaelnotebook.com/slow/index.html
3•calvinfo•29m ago•0 comments

A parallel path for GPU restore in CRIU

https://lwn.net/Articles/1024747/
1•rbanffy•29m ago•0 comments

Karmic

https://www.withkarmic.com/
1•handfuloflight•33m ago•0 comments