God's+number+by+Sabrina

The Rubik's Cube was invented by Erno Rubik in 1974. There are 43,252,003,274,489,856,000( approximately 43 quintillion) possible configurations of the cube. Recently, a group of researchers used 35 CPU-years donated by Google to solve every position of the Rubik's Cube.They found that the maximum number of moves needed to solve the Rubik's Cube from any position was 20. God's algorithm, or the most efficient algorithm possible, would take at most 20 moves. Therefore, God's number is 20. For more information on this topic, visit [].