jueves, 16 de agosto de 2007

Rubic cube in 26 steps

Daniel Kunkle can solve a Rubik's Cube in 26 moves. Or at least his computer can.

Kunkle, a computer scientist at Northeastern University in Boston, has proved that 26 moves are enough to solve any Rubik's Cube, no matter how scrambled. That's one move below the previous record. In the process of cracking the cube, he developed algorithms that can be useful for problems as disparate as scheduling air flights and determining how proteins will fold.

Rubik's Cube has approximately 43 quintillion possible configurations. Even a supercomputer can't search through every possible configuration to find the quickest way to unscramble a given starting arrangement in a reasonable amount of time. So Kunkle and his advisor Gene Cooperman developed some clever mathematical and computational strategies to make the puzzle more manageable.


Look at the movie below. This person soves it in 20 seconds or so. Amazing!