Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It's harder than it looks

My family just finished this puzzle and it's more challenging than it looks. The shapes of the pieces are fairly conventional, so it's not that easy to pick one out from a similar piece. The puzzle itself has a large dark area in the center, which I guarantee will be the last thing you complete. Make sure you put this together under a strong light, so you can more easily identify subtle patterns. Worth the money.