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.
Balance puzzle Balance puzzle A balance puzzle or weighing puzzle is a logic puzzle about balancing items—often coins—to determine which holds a different value, by using balance scales a limited number of times. These differ from puzzles that assign weights to items, in that only the relative mass of these items is relevant. For example, in detecting a dissimilar coin in three weighings (n = 3), the maximum number of coins that can be analyzed is = 13. Note that with 3 weighs and 13 coins, it is not always possible to determine the identity of the last coin (whether it is