Every reachable state of a Rubik’s Cube gets an index number, and the index gets a slider — so you can drag from permutation 1 to 43,252,003,274,489,856,000 and watch the colours churn past. Jump buttons move you 500 or 5,000 states along, a toggle switches between flat net and rotating cube, and Superflip and Checkerboard are bookmarked, so the famous positions are one click away.