The official PACE website

List of Treewidth solvers, instances, and tools

Instances of PACE 2021 and scripts to download and convert the source data sets

Instances of PACE 2018 https://pacechallenge.org/2018/

convert multiple-sequence-alignments to character-state intersection graphs

instances for Track B of PACE 2017

Fresh and very challenging treewidth instances, in .gr format

The original treewidth instances used in the PACE 2017 challenge, in .gr format

Large graphs from the UAI competition, converted to .gr format