Hello

I'm new to Sudoku and have found that I get lost in the logic at a certain point in the puzzle books I have tried. The books are "Sudoku for Dummies" (I got lost at the tough ones) and "Mensa Guide to Solving Sudoku" (I got lost at the X-wings swordfish etc.). Is this typical? I've worked over 250 puzzlers since Oct 07. I figure I need more practice with puzzles that use the lodic methods I mentioned above. Any ideas or suggestions as how to "unstick" myself

JCBarber