Su Doku, a seriously addictive puzzle, is sweeping the world. Su Doku is a phenomenon, spreading faster than you can count to nine. In How to Solve Su Doku, mathematician Robin Wilson gives a step-by-step guide to unravelling these sometimes infuriating, but always captivating puzzles. There are examples and practice grids for you to hone your skills before you swiftly tackle the next fiendish challenge. So if you are feeling a little grid- locked, here are 52 brilliant tried and tested tips and tactics to help you get to grips with Su Doku puzzles. Remember, no mathematical skills are needed. It is entirely a test of logic (well, and patience!).
