Its a great book. My whole family solve this book., Me and my father solve this together when we are free.
Great thing is that, I had also tried some other puzzles book. but they are damn hard. I had to check a puzzle and then see the answer. But from this book you can easily solve.
Just a little bit mind and you are done.I recommend this book. Its a very nice book. The first puzzle book I like after shakuntala devi puzzles.