The 12 wooden cubes may look innocent enough while sitting in their tray, but figuring out what cube belongs in which spot can be quite the challenge. Try to decipher the cryptic cubes on any of the 25 puzzle cards that accompany this set to determine how the colors should be arranged. If you're stumped, don't worry! the answers to each puzzle are on the back of the card. EASY TO HARD DIFFICULTY: The first few puzzle cards in this 25-card set offer easy puzzles that can be solved quickly and make great puzzles for kids, but each puzzle gets harder and will make challenging puzzles for adults Academics. Choice Brain Toy Award Recipient: Chroma Cube has been honored with a 2018 Academics’ Choice Brain Toy Award. Entries are judged by category, subject area, and grade level, and evaluated based on standardized criteria rooted in constructivist learning theory. A volunteer panel of product-appropriate judges, including parents, educators, scientists, artists, doctors, nurses, librarians, students and children, evaluate submissions based on educational benefits such as higher-order thinking skills, character building, creative play, durability and originality. Only the genuine “mind-builders” are recognized with the coveted Academics’ Choice Award™. Makes a great gift for any puzzler.