I did alright for the first three words then I kept coming up with words that weren't in the dictionary. After 3 successive words that weren't in the book I hoicked it over my shoulder and walked out of the room to get myself a drink (water). When I found it again a couple of weeks later I picked another 2 words that weren't in the book. Now I have it here by the computer it serves as a reminder. When I need to look up a word I get up and go across the room and get it from the macquarie dictionary.
I learnt a valuble lesson there. When I first got the book I wondered whether I shouldn't just throw it in the bin and find another dictionary. I thought it looks kinda useless (bit thin for a english language dictionary) and being american spelling... Ah well its only a game I thought. I laughed when I found out that every 5th word was removed from the book. How the mind loves to live up to your expectations 
Alex
