Sudoku, a seriously addictive puzzle, is sweeping the world, it’s a phenomenon that’s spreading faster than you can count to nine. In How to solve sudoku, mathematician Robin Wilson gives a step-by-step guide to unraveling these sometimes infuriating but always captivating puzzles. T here are examples and practice grids for you to hone your skills on before you move on to the next fiendish challenge. So if you’re feeling a little grid-locked here are ...