6A graduated version of the popular classic, BrainBusters go beyond the word-scramble of Jumble(R) to challenge the reader's knowledge of such subjects as history, geography, and science. For more than 40 years, millions of newspaper readers have delighted in solving Jumble(R), which appears in hundreds of national papers and in these puzzle books that offer hours of challenging wordplay and fun. Each page features a series of mixed-up words coupled with clues, and one letter from each word is used to form the answer to the puzzle.