Exquisite award-winning Scramble Squares nine-piece puzzles are "Perhaps the World’s Most Challenging Puzzles" on over 100 nature, science, technology, sports, history, geography and cultural topics. Scramble Squares teaches critical thinking/problem solving skills, patience, perseverance, statistical probabilities, and cooperative and solitary productivity, while providing quiet and stimulating fun. Each puzzle package includes a panel of fascinating facts on the subject of the puzzle, as well as a trivia question and hidden answer.