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Updated: 1 hour 25 min ago

Algorithm for NP-Complete Sudoku

Fri, 07/17/2026 - 9:37pm

Article URL: https://zenodo.org/records/21420871

Comments URL: https://news.ycombinator.com/item?id=48954267

Points: 1

# Comments: 0

Categories: Hacker News

LLMs are like handwritten notes

Fri, 07/17/2026 - 9:14pm

Article URL: https://dunkirk.sh/blog/llms/

Comments URL: https://news.ycombinator.com/item?id=48954159

Points: 1

# Comments: 0

Categories: Hacker News

I Started a "Dirt Notebook"

Fri, 07/17/2026 - 9:12pm
Categories: Hacker News

Show HN: Fitbod Meets Duolingo

Fri, 07/17/2026 - 8:54pm

Hi all! Ricardo, Solo builder of Cooltivo here. When I first started working out, I will say that something that really got me into the habit was fitbod, the app that picks your workouts for you. This worked fine for the first year or so, but once I had a mild injury and stopped going to the gym for a couple months, It was so hard to get back into the habit. Fitbod looked as a white canvas again and I lost motivation to take it back... That's where I started working on Cooltivo, a fitness app that combines the best of Duolingo and Fitbod.

The mechanic: Töllin, an animated tree coach inspired by the Tree of Tule from Oaxaca, Mexico, builds your program around your equipment, schedule injuries and preferences. After 3 workouts you're assigned a plant/mushroom friend whose body transforms based on your consistency — train and it gets stronger, skip a month and it becomes jabba the hutt. But as soon as you start working out, your character builds up a lot faster, similar as how humans do. On the guide side, Töllin has 900+ exercises where to pick from, it usually picks workouts and programs out of the most common and simple variations you can find online (PPL, upper/lower, etc.), but always adapting it to your level. If you reduce the weight in a session, it will remember for subsequent sessions.

If you are thinking about starting to work out, give it a shot! Is free for now

Comments URL: https://news.ycombinator.com/item?id=48954030

Points: 1

# Comments: 0

Categories: Hacker News

Open Source Parametric DIY Air Purifier Builder

Fri, 07/17/2026 - 8:54pm

Article URL: https://www.filterboxbuilder.com/

Comments URL: https://news.ycombinator.com/item?id=48954024

Points: 2

# Comments: 1

Categories: Hacker News

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