Ride on any subway train in America and, unless there's a live band performing on their iPhones, you'll see a whole lot of people hunched over their Sudoku puzzles. We won't pretend to know what these puzzles are actually for, but we assume that people send in their completed puzzles as part of a massive distributed computing project designed to end poverty. Only that could possibly explain the vast amounts of mental energy that people expend on it.
But now thanks to Google, these selfless puzzle-solvers will no longer have to devote every possible second of their free time slaving away at mind-numbing calculations for the greater good. The Google Goggles phone app now has a Sudoku solver. Simply point your phone at the puzzle, click "solve," and your phone will fill in the numbers for you, leaving you free to do something you actually enjoy.
