If you like Sudoku you have to try Big Bad Sudoku Book. It's our opinion that many other versions of the game sort of take the fun out of it. They won't let you enter in wrong numbers, and if you ask for a hint they straight up give you the answer to a cell. Why not just put up a puzzle and solve it for you? I'll tell you why, cause that's not fun! Our approach is a lot different. Our hints guide you to answers without flat out giving it away. We provide the tools you need to solve the puzzle with your brain, just like a real paper sudoku book but better!