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A dumb introduction to z3

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

A Dumb Introduction to z3 using Rust

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

Introduction to Writing Good Puzzle Hunt Puzzles

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

Cloudflare says 1.1.1.1 outage not caused by attack or BGP hijack

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

The Hat, the Spectre and SAT Solvers (2024)

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