Sudoku Addiction

I don't know how I find time to do these Sudoku puzzles but I've been averaging 3-4 puzzles a day since I bought this book "Wicked Sudoku".  Once I developed an algorithm for solving a puzzle, it became a matter of really just looking for specific clues.  In the past, I've used our annual flight to Hawaii for time to either write, draw or sleep but this time around, I finished a few Sudoku's in the Demanding category.  The first 100 of the puzzles in this book are Demanding and the second 100 are of the "Beware: Very Challenging" category.  So far, it's satisfying to complete these so we'll see how long I can stay focused.