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matthorse

Re:Show HN: Sufuku – Sudoku, but Numbers Repeat on Friday October 16, 2026 @01:17PM (#50121326)
Thanks for playing! Was it today's board? Friday's is on the harder side. If you want a simpler board you can try Monday's or Tuesday's (this one has quite an interesting shape in terms of your question about techniques).

Some interesting strategies come from the irregular region shapes. For example, you may notice that all 2s a region needs can only go in one row. If other regions have cells in that row, that often forces these cells to be a 1 or a 4 (or a 3 for 6x6 boards).

Show HN: Sufuku – Sudoku, but Numbers Repeat

https://crossnum.com/sufuku

Sudoku is short for "the digits must be single". I wondered if inverting this would work: "the digits must be repeated". And so, by swapping "doku" for "fuku", Sufuku was born.In short, instead of using numbers 1-9 for a 9x9 board, you use 2 twice, 3 three times, and 4 four times (for a total of 9).It plays differently from sudoku than I expected. I assumed it would be simpler, since you have...

( Read More... | 2 comments | on HN )
Re:How Many Screenshot Apps Does the World Need? on Wednesday October 14, 2026 @12:34PM (#50090474)
If I needed a new screenshot app and had to go through 1k+ apps released this year alone, I might as well just prompt claude to create my own tailor-made version. It's just like the JS frameworks vicious cycle.
Re:Show HN: Use your OpenAI subscription to create audiobooks on Tuesday October 13, 2026 @07:09AM (#50069817)
How well does it handle larger files? And other book formats, like epub or mobi?

I'd love to see an actual result what it can do

Re:Postgres isn't slow, your storage is on Monday October 12, 2026 @05:52AM (#50053926)
I think that cloud made people forget how fast computers actually are. Hardware specs got reduced to "vCPUs" count, which isn't a useful abstraction if you are doing anything beyond basic stuff. Similarly, network attached storage became the default, and we started treating its latency as Postgres’s latency. These abstractions made choices seem simpler, and in an era of cheap hardware that was fine, since you could just throw more resources at the problem.
Re:The AI Productivity Gap on Monday August 03, 2026 @05:21AM (#49153273)
Writing code is a small part of everyday's job of a software engineer. The article's table reflects this fairly well.

AI compresses implementation time for an individual engineer, but architecture decisions, design reviews, integration, testing, deployment, and production validation remain largely serial activities. If code generation speeds up by 5x while those bottlenecks don't, you've mostly increased the team's work queue rather than its throughput.

With the current capabilities, models still need constant babysitting and course correction. An engineer who lacks the skills to guide them can end up creating more work for the rest of the team. AI makes it easy to generate code faster than you can understand it, and that cost is paid during code review, debugging, and maintenance by colleagues, whose confidence in that engineer's skills may be affected by his use of AI.

What looks like a productivity gain for one engineer can become a productivity loss for the team as a whole.

Re:Anthropic AI Models Hacked Three Companies During Tests on Thursday July 30, 2026 @09:10PM (#49117915)
Such headlines sell well, but it's the same marketing mantra about ever more powerful models. And what does it say about the company engineering practices of performing tests?
How do you solve multi-device sync and conflict resolution? The model seems simple, but may leak Git semantics to the surface. How does it keep the high-frequency history useful: does it squash it periodically? Durable history and meaningful history are not quite the same thing.