Revenge Of The Ninja Sudoku

Sudoku is the martial art of puzzles, so keep your mind fightingfit with this collection of energetic enigmas and numericalconundrums. Choose from games such as the Swordfish, the GordonianPolygon, Alternating Digits and Jellyfish which make these sudokuninja-hard! Its handy format means it?s also perfect for solvers onthe go and because it is easy-to-learn, addictive and languagefree, it?s suitable for anyone and everyone! Endlessly challenging,these ultimate puzzles will provide hours of fun!