SudoCue Users

I finally completed the puzle correctly, however i had to force, so it beat me, i will have to get better technically to be able to handle these with logic.

First off let me say hello! I was given a Nightmare puzzle to do and it has blown me away, i had actually got bored with Sudoku's because they got boring, this one is excellent. It has taught me more since working on it than any puzzel has, x wing, x-y wing, and swordfish (i'm still having trouble w...