Z3
No written verdict yet. Here is what commenters said.
6recommend
0warn against
Nov 12, 2025first mention
Oct 4, 2026latest mention
Why people recommend it
“z3 or constraint programming comes in very handy”
Show 3 more
“I love z3.”
uses MCMC at workon “Solving the Jane Street reverse engineering challenge”
“Z3 checks at build time”
“We care about Z3 because it is a Satisfiability Modulo Theories (SMT) solver”
Caveats and dissent
No one in these comments warned against it.
Often compared with
Who recommends it in their own words
Threads where it came up
- Z3 API in Python: From Sudoku to N-Queens in Under 20 Lines (2015) 5 mentions
- Solving the Jane Street reverse engineering challenge 4 mentions
- Salt v1.0.0 – a systems language with Z3 theorem proving in the compiler 2 mentions
- Results from the ASIC puzzle 1 mention
- Ask HN: Who wants to be hired? (October 2026) 1 mention
- Online Z3 Guide 1 mention
Data: z3.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 23
“it basically ended up going the Z3/SMT route”
“designed intent-based CDN policy controls with Z3 formal verification”
“I like Z3 a lot.”
“run it through Z3 if I read correctly”
“z3 or constraint programming comes in very handy”
“I love z3.”
“I hindsight I could probably have used SymbiYosys instead of Z3”
“how to convert circuits to z3 equations”
“constraint solving with Z3, which was indeed reasonably fast”
“Z3 checks at build time”
“Z3 proves the base case (vacuously true at i=0)”
“do you see Z3 as a better fit than lean?”
“only available as library code (e.g. Z3 constraint solver)”
“uses Dafny (backed by Z3)”
“Z3 search scripts”
“You can get it here with the Z3 theorem audit, a CAS audit”
“I've been learning the basics of using Z3”
“We care about Z3 because it is a Satisfiability Modulo Theories (SMT) solver”
“I'm a fan. I've been building a proof assistant directly on the z3py api.”
“contains many Z3 examples”
“Have you tried to compare Z3 with cvc5?”
“I always use that instead of the z3-solver directly.”
“I used the Z3 SMT solver to test if two models are logically equivalent”