Game on a grid of 4 × 4 squares with 15 pieces numbered from 1 to 15. These tokens can not move on the board by sliding in the only empty cell at a given time. The game is to put the pieces in numerical order.
In this digital version you have multiple checkered 4x4 3x3 and 5x5.
LOYD Samuel (1841-1911). Famous creator of math games. Chess problems. He popularized the teasing he claims the invention (1891)
The teaser is a solitary game checkerboard pattern created in 1870 in the United States. His mathematical theory was published by the American Journal of pure and applied mathematics in 1879. In 1891, his invention was claimed by Sam Loyd, when the game knew considerable interest, both in the United States and Europe. It consists of 15 small squares numbered from 1 to 15 that slide in a planned framework for 16. It is to reorder the 15 tiles from any initial configuration.
