Thank you for your instructions. I will keep these 33's and 44's advice when I advance to the harder puzzles. At the moment I am trying to get the better of the challenge 4x5's which I find are difficult enough. At times I really do give up and ask for a hint sometimes and it is quite obvious that I missed an easy X somewhere. Sometimes in my haste to see how quick I can finish I overlook a simple clue and I feel stupid. I do love solving them though. They are beginning to come into my dreams actually. I am getting worried!
Oh what the heck, I'll do another few more and then go to sleep.