A set of instances from the ROADEF‘05 challenge can be found here. They do not comply with the CSPLIB format and have additional constraints.

File Type Notes
CarSequencing-essence.zip zip

Some instances in Essence format. Includes all instances from data.txt, and the “instance 0” from Regin & Puget.

data.txt txt

Best known results are in results/result1

ProblemDataSet200to400.zip zip

30 new hard problems from Caroline Gagne