EXTREME WORD SEARCH CHALLENGE: 150 Tricky Word Searches for the Best Puzzlers with 15.000 Captivating Words – Prove Yourself with these Hard and Difficult Word Search Puzzles for Adults

I like the fact that this book has 100 words for each puzzle and they are NOT in alphabetical order. Makes it more of a challenge. Also I like to time myself and try and improve on previous scores.