Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fun & easy to understand.

After completing my first Will Shortz book I went back craving more. A person who doesn't understand cross words, Will beautifully describes how to do these fun and addicting games. I use it to numb my mind and help me relax after a long day. And I've heard that number games are a perfect before sleep activity. Keep the puzzles coming Will. This is a great activity for even the math challenged. I love them.