Learn to Solve Sudoku the Dreamagic Way is a Dream Machine Site The Dream Machine --- The Imagination of the World Wide Web

The puzzle below is billed as the hardest Sudoku puzzle ever devised. This assertion is challenged by many people, but we guarantee that you WILL find it quite difficult to solve, even with the help of the dreamagic program. Chances are you will have to set upwards of five levels of breakpoint in order to solve it, so it is a VERY good exercise for backtracking, using the F11 function and the backslash key. Turning on F11 before backtracking means you do not have to keep track of which digit you tried first and whether you have tried both of them or not...in which case you have to continue backtracking. By the way, if you ever end up at the very beginning of the puzzle while backtracking, it means you have made some error along the way, since we assure you there IS a pathway that goes all the way from beginning to end...that is, the puzzle DOES have a solution. Of course, you could use the F10 function to see the solution, but what fun is that?

You may find trying to solve this one VERY frustrating, as you may make a LOT of mistakes along the way. So, we don't blame you if you give up and forget about it. After all, not everyone will get a Ph.D. in Sudoku. LOL