A TSP game I wanted for 10 years — built in 4 hours - GraphHopper Directions API [https://www.graphhopper.com/blog/2025/12/08/a-tsp-game-10-years-in-the-making-built-in-4-hours/] - 2025-12-20 13:10:34 - public:xxx algorithms, game, makemyday, optimization, route, travel, travellingsalesman, tsp - 8 | id:1536719 -