Alan ,
Thank you so much for taking the time to solve my posting problem. (I will try to behave so that you don't come to regret it )
While you were able to identify the remedy straight away , the thing that I most appreciate about your responses is the manner in which you are always able to provide detailed step by step instructions in plain English that even a novice like me can follow.
Just to quickly update the rest of the forum ...old computer died ... took me ages to buy & set up a new one but when I finally did , i was unable to make a post or utilise the forum ... so please forgive me for any un - answered posts over the last few weeks.
One more little addendum , I actually found it quite invigorating with the old laptop as I would log into a chi game knowing that from anywhere between 10 & 50 minutes it would shut itself down so if you want an extra challenge just give yourself a time limit to solve a puzzle.