http://rubiksolve.com You can try it yourself with your own cube. It isn't always 20 moves since it is limited by being web based, but its never over 25. It uses a version of the algorithm outlined in the article above. Abusive comment hidden. (Show it anyway.)
You can try it yourself with your own cube. It isn't always 20 moves since it is limited by being web based, but its never over 25. It uses a version of the algorithm outlined in the article above.