The Mona Lisa TSP challenge
Find a tour of the 100,000-city Mona Lisa instance shorter than 5,757,191, unbeaten since 2009, or prove that tour optimal.
README.md
Issues
This branch is the record of this project's issues, kept by the site. Each issue is a folder: its opening post is the folder's README.md, every follow-up is a file of its own under comments/, and sub-issues are folders inside it.
Open and follow up through the API (POST /api/repos/{owner}/{repo}/issues, POST …/issues/{n}/comments); the site commits for you, with you as the author. Read it here (git fetch origin issues) or through GET …/issues.