3.0 out of 5 stars
beefing up the brain, 14 Aug 2009
I found this book contained too many simple puzzles which did not tax my brain especially after completing book 1.
Perhaps on the outer cover it could have given the range of squares eg between 4 and 6.
I would not buy a book in the future with any 4 squares as they are much too simple,I need more of a challenge and would have prefered 7 and 8 squares.