Take your place among the finest puzzle warriors by solving these tricky ninja sudoku. In order to reach the loftier levels of the assassin ranks, fine tune your logic puzzle expertise with these fun conundrums that range from easy to easy medium. You ll become familiar with basic and intermediate techniques and then, toward the end of the book, the intermediate techniques may be used in combination (but not overwhelmingly so). At this point in sudoku training, ninjas acquire new skills and rely on them to overcome the challenges presented. Solving the sudoku in this book will be rewarding and give you Yellow Belt status, ready to move on to the next echelon.