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A dumb introduction to z3

news.ycombinator.com Unknown 2025-09-19 15:46:45

Recently I have come across a nice article: Many Hard Leetcode Problems are Easy Constraint Problems, and I figured, I really should learn how to use these things! What else do I really have to do? I have had use for solvers (or as they are commonly called: theorem provers) In a previous article, but then I tried to prove the things with good old algorithms. I looked at z3 at the time, but found the whole concept a bit too opaque. Now however, it seemed a bit easier to get into. To be clear, as

Topics: assert c10 int let solver

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A Dumb Introduction to z3 using Rust

news.ycombinator.com Unknown 2025-09-19 20:46:45

Recently I have come across a nice article: Many Hard Leetcode Problems are Easy Constraint Problems, and I figured, I really should learn how to use these things! What else do I really have to do? I have had use for solvers (or as they are commonly called: theorem provers) In a previous article, but then I tried to prove the things with good old algorithms. I looked at z3 at the time, but found the whole concept a bit too opaque. Now however, it seemed a bit easier to get into. To be clear, as

Topics: assert c10 int let solver

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AI Is Bad at Sudoku. It's Even Worse at Showing Its Work

cnet.com See Full Bio 2025-09-22 20:12:03

Chatbots are genuinely impressive when you watch them do things they're good at, like writing a basic email or creating weird, futuristic-looking images. But ask generative AI to solve one of those puzzles in the back of a newspaper, and things can quickly go off the rails. That's what researchers at the University of Colorado at Boulder found when they challenged large language models to solve sudoku. And not even the standard 9x9 puzzles. An easier 6x6 puzzle was often beyond the capabilities

Topics: ai like models puzzles solve

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Introduction to Writing Good Puzzle Hunt Puzzles

news.ycombinator.com Unknown 2025-10-06 03:08:52

Introduction to Writing Good Puzzle Hunt Puzzles Version 1.0 - 2014-02-24 - cleanup, add metapuzzle and solving tools sections Version 0.9 - 2014-02-18 0. About This Document This document is advice for writing puzzles. It is specifically geared toward the MIT Mystery Hunt, though the techniques and ideas will likely be useful in other puzzle-writing. The target audience is those who have participated in one or a few puzzle hunts, but not written a substantial number of puzzles before. I will

Topics: answer hunt puzzle puzzles solver

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DaVinci Resolve has new immersive tools for spatial video editing

9to5mac.com Marcus Mendes 2025-11-26 22:35:42

Today, Blackmagic Design announced a major update to DaVinci Resolve Studio, with extended support for editing spatial videos captured with its immersive camera. Here’s what’s new. Last year, Blackmagic Design launched the URSA Cine Immersive camera, which it called “the world’s first commercial camera system designed to capture Apple Immersive Video.” With a double-lens system that records stereoscopic 3D videos, the camera was launched alongside an updated version of DaVinci Resolve that “le

Topics: apple davinci immersive resolve video

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Yes, you can edit video like a pro on Linux - here are my 4 go-to apps

zdnet.com Jack Wallen 2025-11-30 22:19:05

Elyse Betters Picaro / ZDNET ZDNET's key takeaways Linux has several high-quality video editors. You'll find some pro-level and some built for consumers. The best-in-class goes to DaVinci Resolve. I've been filming and editing videos for a long time. When I first started, I worked with software that was user-friendly but incapable of producing professional-level videos. Slowly, I climbed the ladder. Now I feel like the tools I have are worthy of being taken seriously. That's not to say tho

Topics: color editor resolve video videos

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Cloudflare says 1.1.1.1 outage not caused by attack or BGP hijack

bleepingcomputer.com Unknown 2026-01-10 17:49:29

To quash speculation of a cyberattack or BGP hijack incident causing the recent 1.1.1.1 Resolver service outage, Cloudflare explains in a post mortem that the incident was caused by an internal misconfiguration. The outage occurred on July 14 and impacted most users of the service all over the world, rendering internet services unavailable in many cases. “The root cause was an internal configuration error and not the result of an attack or a BGP hijack,” Cloudflare says in the announcement. T

Topics: cloudflare dns outage resolver service

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The Hat, the Spectre and SAT Solvers (2024)

news.ycombinator.com Nicolás Hatcher 2026-03-13 08:14:20

The Hat, the Spectre and SAT Solvers Introduction In this blog post you are going to read about two things: A new flashy discovery in mathematics: aperiodic tilings of the plane with a single monotile SAT solvers. A family of not so well known algorithms in computer science Hopefully by the end of the post you will know a fair amount about the hat, the turtle and the spectres and have another powerful tool under your belt, SAT solvers. Thus, you can see this post either as an exercise in r

Topics: hat sat solver tile tiles

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Reflections on Sudoku, or the Impossibility of Systematizing Thought

news.ycombinator.com Unknown 2026-03-13 00:54:00

I reflect on the Entscheidungsproblem how it relates to Sudoku solvers. It's a little weird.. The other day, to no one's surprise, I was fumbling over a programming problem. This wasn't anything satisfyingly algorithmic, but more the thing where you're evaluating a million questions on "how should I structure this system?". While I'm no design purist, I like to at least make an attempt at sketching out the problem space and think through options before I just start coding something. My rule of

Topics: like problem problems solve tools

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Latest Tech News

A dumb introduction to z3

A Dumb Introduction to z3 using Rust

AI Is Bad at Sudoku. It's Even Worse at Showing Its Work

Introduction to Writing Good Puzzle Hunt Puzzles

DaVinci Resolve has new immersive tools for spatial video editing

Yes, you can edit video like a pro on Linux - here are my 4 go-to apps

Cloudflare says 1.1.1.1 outage not caused by attack or BGP hijack

The Hat, the Spectre and SAT Solvers (2024)

Reflections on Sudoku, or the Impossibility of Systematizing Thought

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