Lego Mindstorms Hack solves those tough Sudoku problems

Lego Mindstorms Hack solves those tough Sudoku problems – Tech Products & Geek News | Geek.com: "Using components from the Lego Mindstorms NXT System, Hans created a rover that scans over a Sudoku puzzle using a scanner on a robotic arm. Then, using character recognition programming, learns the puzzle and creates a solution. The robotic rover will then back over the Sudoku puzzle and fill in the appropriate blanks with a pen for the Sudoku solution."