The Great Minds Set of 5 Wooden & Metal Puzzles Compendium by Professor Puzzle is a collection of brain teasers designed to challenge and engage your strategic thinking skills. The puzzles come in an irregular shape and are made of metal and wood, offering a unique and durable construction. With sizes ranging from 2x2 to 3x3x3, this puzzle set is perfect for puzzle enthusiasts looking for a variety of difficulty levels and a timeless theme of strategy. Perfect for both solo and group play, this set promises hours of entertainment and mental stimulation.