Hone your brain and sharpen your pencils, for a new volume of Super Sharp Cutting-Edge Sudoku series is here Sudoku devotees can spice up their solving with these three fun twists on the popular puzzle Enjoy a trio of great mental treats, including Flower Sudoku, where innovative interlocking grids form a flower shape; Outside Sudoku, which begins with the numbers outside the grid; and Consecutive Sudoku, which...