I think I was half way through this book when I made this series of posts last year. I managed to get it finished in 2018 and it was very useful indeed.
I know some quizzers tend to avoid books with titles like "Mammoth" and I do agree that Books of this side, advertising this many questions, tend to suffer from filler and boredom. That doesn't happen here. This book is finely crafted, superbly put together and researched well, breaking down quizzes into subjects with a vast range of questions to keep everyone happy!
Highly recommended and will keep you busy for a long time..