Ernest

Thanks for the lessons, I didn’t think that I needed them, but right after watching the first lesson I realized that I was confusing my mind with excessive pencil marks, forcing the cells since I started doing Sudoku a couple years ago. Since then I got up to the “Senior Lesson”. Your thorough explanation of routines for locating the correct numbers easily cut my puzzle time in half. I am very happy that I spent the time on your lessons (and replaying).