Run for cover, because Mutant Sudoku is on the loose! Thomas Snyder and Wei-Hwa Huang are both U.S. Sudoku Champions and they'll have readers filling in grids of all shapes and sizes, testing parts of their logical mind that have never been tested before. They will marvel at the ingenuity within these pages and after experiencing the power of these Mutant Sudoku, normal 9 x 9 puzzles will never seem the same again.