Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Horrible! Avoid this book!

This is the WORST book on Hanjie I've ever seen. The author has tried to construct on the regular 5 block grids, but he can't seem to get the hang of it, so on almost every puzzle, you have rows and columns, sometimes up to three or four on each side, that you have to black out. This makes the 5 block grid almost useless for counting and placement. The easy puzzles are too easy and the hard puzzles have too many puzzles that you have to guess where to start. I am really, really sorry I wasted my money on this book, and I recommend that nobody else do it.The only reason I gave this book even ONE star is because Amazon won't let me do this review without a star rating. In reality I would rate it as a -3 stars!