Toy enigma that challenges ingenuity. Solutions to puzzle may require recognizing patterns and creating a particular order. People with a high inductive reasoning aptitude may be better at solving these puzzles than others. Puzzles based on the process of inquiry and discovery to complete may be solved faster by those with good deduction skills. A popular puzzle toy is the Rubik's Cube, invented by Hungarian Ernő Rubik in 1974. Popularized in the 1980s, solving the cube requires planning and problem-solving skills and involves algorithms. There are many different types of puzzles, for example a maze is a type of tour puzzle.
3-D Man of a normal human being. In addition, 3-D Man had the limited quasi-telepathic ability to perceive the distinctive aura of the Skrull race, even when a Skrull has assumed another form. Chuck was an expert pilot and a talented football player. Hal is an experienced scientific researcher. Hal is astigmatic, and requires special glasses. A poliomyelitis victim as a child, he now requires crutches to walk. In "What If" vol. 1, #9, FBI agent Jimmy Woo brought the 3-D Man together with several other heroes, including Gorilla-Man, Human Robot, Marvel Boy, and Venus, to form the 1950s Avengers. These heroes