Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sit and Confirm

My sister got me this book at Christmas. I thought it was a great gift, as I enjoy solving chess puzzles. Then I actually opened and saw the contents. What a disappointment.There is little thinking, and there is nothing to solve, you just look at unwinnable positions and confirm that they are unwinnable. Most can be 'solved' in seconds. I think this is a self-indulgent book, a way for the authors to exhibit cleverness, and a grand disappointment.If you enjoy solving chess puzzles do not buy this book.