Results for the 2024 MiniZinc Challenge have now been announced!

MiniZinc

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

Get startedDownload

Latest release: 2.8.5 (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 2.8.5

Released 3 June 2024

  • Add string_split function that splits a string into an array of strings based on a separator.
  • Add json_section annotation to mark an output item as a JSON section (issue 816).
  • Fix specification for constraint items and annotations in FlatZinc JSON.
  • Fix flattening of negated let expressions with constraints.
  • Fix crash when equating identifiers to tuples/records in if-then-else expressions.
  • Fix string_length function to return the number of Unicode code points rather than the number of bytes (i.e., to interpret the string as UTF-8).
  • Emit type error for opt tuples and records created through type aliases.
  • Fix evaluation of par partial functions returning arrays.
  • Fix type inference for if-then-else expressions with different tuple or record types in the branches.
  • Fix evaluation error caused by removal of fixed FlatZinc variables without fixing them in the output model.
  • Fix computed type when flattening cv comprehensions containing tuple or record types.
  • Fix unsatisfiability caused by reification in negated boolean context (issue 813).
  • Fix bug in computation of common type of incompatible record types.
  • Fix crash when type checking nested arrays of tuples or records.
  • Fix incorrect unification of flattened tuple/record fields with paths enabled.

See the full changelog.

View all releases

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