Problem submissions for the 2026 MiniZinc Challenge are currently open! See the call for problems for more information.

MiniZinc

MiniZinc is a high-level constraint modelling language that allows you to easily express and solve discrete optimisation problems.

Get startedDownload

Latest release: 2.9.5 (changelog)

PackagesSource codeLicense information

MiniZinc is developed at Monash University with support from OPTIMA.

AimeeAlidaArvilBeulaCiaraColonDarbyDianaDonnaDulceEliasElvieErnstEssieGreenJeradJesseJimmyJodieJulieKatieKeionKelsiKizzyLarryLeafyLloydLymanMableMartyMerleMetroMistiMykelNeliaNevinPaulaSheriTeddyWayne
Table seating allocation
MonTueWedThuFri
Aimee
Night
Evening
Day
Evening
Beula
Evening
Day
Evening
Night
Evening
Ciara
Day
Evening
Night
Darby
Evening
Evening
Night
Ernst
Night
Evening
Evening
Day
Green
Evening
Evening
Day
Night
Jesse
Day
Day
Day
Night
Katie
Day
Day
Evening
Day
Lloyd
Day
Day
Night
Evening
Mable
Night
Day
Day
Evening
Nevin
Evening
Day
Day
Evening
Day
Paula
Night
Evening
Evening
Day
Rostering
Vehicle routing

Try MiniZinc

Try one of the examples, or write your own model.

Why choose MiniZinc?

  • High-level language

    Model constraint satisfaction and optimisation problems using readable, intuitive logical constructs, with full type safety.

  • Solver independent

    Run the same model using a variety of different solver technologies, without being locked into a particular solver.

  • Pre-defined constraints

    MiniZinc features a large library of pre-defined constraints, making modelling complex relationships simple.

  • Fully featured development environment

    Use the MiniZinc IDE to write and run models, visualise search and solutions, profile performance and more.

  • In-depth learning materials

    MiniZinc has comprehensive documentation, including the tutorial, several courses, the user manual, and library documentation.

  • Integrate MiniZinc into your project

    MiniZinc can be embedded into Python and JavaScript programs, and can even be used entirely from within the browser.

Latest Release

MiniZinc 2.9.5

Released 23 January 2026

  • Automatically detect Gurobi 13.0 and potential future versions.
  • Enable projection of arrays of tuples and records using field access notation (issue 970).
  • Enable anonymous assignment generators in comprehensions.
  • Rewrite regular to fzn_regular instead of fzn_regular_set when possible, in order to improve performance for solvers that do not support fzn_regular_set natively (issue 981).
  • Add zip and unzip functions to the standard library (issue 967).
  • Add enum constructors lifted to arrays (issue 965).
  • Add sliding_among constraint to the standard globals library (issue 960).
  • Improve support for input of enum definitions using using JSON data files.
  • Plus 19 bugfixes!

See the full changelog.

View all releases

Get your MiniZinc stickers, mugs, t-shirts etc. (sold at cost price)!