The entrants for this year (with their descriptions, when provided):
In addition, the challenge organisers entered the following FlatZinc and MiniZinc implementations:
As per the challenge rules, these entries are not eligible for prizes, but do modify the scoring results.
The results for the MiniZinc Challenge 2021 are
All times are given in milliseconds.
A score of 0.0 indicates a worse answer in quality (worse objective, no proof of optimality, or no answer for satisfaction problems).
A score of 1.0 indicates a better solution in quality. When the quality is the same, the 1.0 purse is split with respect to time used.
If a promoted entry does not recognize an option (or states that it is just ignored), times and solutions from the previous category are used for scoring. The suffixes -fd, -free, -par or -open (for the parallel portfolio solver entered) at the end of the solver names indicate which configuration the solvers were run with.
The time limit includes both MiniZinc compilation and solving.
In the Status column:
All problems are available in a zipped tar-ball here.
Select a list of solvers and benchmarks and click on "Compute Results" to score the solvers against each other on the selected benchmarks. The entrants for each of the fd search, free search and parallel search categories can be selected with the corresponding buttons.
Total per problem:
|Problem||Instance||Solver||Status||Time||Objective||Score||Score Incomplete||Score Area|
The following table lists the global constraints used by each model in this year's challenge. In addition, the columns RC and SBC, respectively, indicate whether the model contains redundant or/and symmetry breaking constraints.
|Model||RC||SBC||Global constraints used|
|mapping||bin_packing_load, count, maximum, network_flow_cost|
|p1f-pjs||X||circuit, all_different, inverse, lex_less|
|peacable_queens||X||count_eq, regular, value_precede|
|yumi-dynamic||all_equal, all_different, circuit, cumulative, diffn, increasing, table, value_precede, value_precede_chain|
The files on this page are for MiniZinc version 2.5.5.