From Google Mobile Blog,
Our favorite weekend distraction is a quiet 15 minutes spent solving a Sudoku puzzle. But even that can be an frustrating experience if (like us) you make a mistake and are unable to solve the puzzle. Now, Goggles on Android and iPhone can recognize puzzles and provide answers to help make you faster than a Sudoku champ. So if you ever get stuck, take a clear picture of the entire puzzle with Goggles and we’ll tell you the correct solution. Check out this video to see how it works.
Google Goggles 1.3 with improved barcode scanning is available for download in Android Market. Recognition of print ads and Sudoku solver is now enabled for the Google Goggles app on Android, as well as the Goggles component of the Google Mobile App on iPhone.