The GWR is the New Guinness World Record: Largest Spot the Difference Puzzle. 2007. There are 80 changes, time set is 78min 15 sec. I am saving this for last er... get the practice in first.
I have solved most of the puzzles, wrote down my time and ticked in pencil on the keep score. When I have finished with the book I am passing it on to my daughter to take up mine and the book's time challenges. I actually do better once I have a glass of wine or two, it could be the double vision kicking in!!
In our search for a spot the difference for our 4-year old my wife and I thought this looked good and when it arrived it turned out to be brilliant.
There are four levels: Novice, Master, Expert and Genius and each level has a colour code at the edge of each page for easy reference. Each puzzle tells you how many differences there are, with a set of tick boxes to keep the score and a time estimate as to how long the puzzle should take. All the puzzles are photos but they are very clear and colourful - the quality of the whole book, although not fantastic is very good, after all you are going to draw all over it.
We are now all ready for the next visit to a restaurant - if I can wrestle it off my 4-year old it will help pass the time in between courses!
Our 6 year old loves spot the difference puzzles and we have the other book in this series which has been a favourite for months. This one is just as good. The puzzles get harder throughout the book which makes it more of a challenge.