"Here's Your Third Sudoku Video Lesson from the Sudoku Professor!"

Power Moves:  The Double-Double Pencil Marking Technique PLUS a Variation on the 1-9s Discovery Technique...

In this lesson, I’m going to show you a variation on the 1-9s:  Reverse 1-9s (or 9s down to 1s).  Why is the 1-9s technique so important?  I’ll discuss this here.

I’ll also introduce a new pencil marking technique:  the Double-Double.  This is a powerful technique that will allow you to eliminate where other numbers can go by using only partial information.