9Our largest crossword puzzle book yet, it's stuffed with more than 300 easy to challenging puzzles. This huge puzzle collection is the perfect companion for crossword fans who can't get enough of these addicting pencil puzzlers. This mammoth collection starts with mildly tricky puzzles, then challenges readers with more difficult puzzles, all the way up to Perplexing Puzzles. This book is sure to excite gamers of all ability levels, while helping to improve vocabulary, memory, and problem-solving skills.