With the help of supercomputer time donated by Google and by Sony pictures, in 2010, Tom and his colleagues determined that God's number in the face-turn metric is 20. David Joyner received his Ph. D. in mathematics from the University of Maryland, College Park.
How did they find God's number?
A History of God's Number By 1980, a lower bound of 18 had been established for God's Number by analyzing the number of effectively distinct move sequences of 17 or fewer moves, and finding that there were fewer such sequences than Cube positions.
What is God's number in cubing?
That number is 20, and it's the maximum number of moves it takes to solve a Rubik's Cube. Known as God's Number, the magic number required about 35 CPU-years and a good deal of man-hours to solve. Why?11 Aug 2010
What is the Devils algorithm for 2x2?
A 2x2x2 cube has 8 pieces, each of which can be in any of the 8 corners, which gives 40320 (1*2*3*4*5*6*7*8). 3674160 / 40320 = 91.125. While each corner can be in 3 different positions, you cannot just use 3^8, as just flipping one corner would break the metric of the puzzle.1 Mar 2012
What is God's number in math?
God's number is the maximum number of moves required to solve any of the 43,252,003,274,489,856,000 combinations of the cube. It has been coined 'God's Number' as mathematicians believe that only someone who is omniscient could solve something in the shortest sequence of moves.